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Kinematics & Graphing (all levels of Physics) 1D & 2D motion

Total questions: 155

Worksheet time: 4hrs 34mins

Name
Class
Date
1.
Which expression has the same dimensions as an expression yielding a value for acceleration (m/s2)?
a)
v/t2
b)
v/x2
c)
v2/t
d)
v2/x
2.
Which expression has the same dimensions as an expression yielding a value for time?
a)
x/v
b)
x/v2
c)
t/x
d)
1/v2t
3.
Which of the following equations is NOT dimensionally correct?
a)
Δt=Δx/v
b)
a=v2/Δx
c)
Δv=a/Δt
d)
Δt2=2Δx/a
4.
A hiker travels south along a straight path for 1.5 h with an average velocity of 0.75 km/hr, then travels south for 2.5 h with an average velocity of 0.90 km/hr.  What is the hiker's displacement for the total trip?
a)
1.1 km to the south
b)
2.2 km to the south
c)
3.4 km to the south
d)
6.7 km to the south
5.
A toy car is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s2.  What is the final velocity after 6.0 s?
a)
10.0 m/s
b)
12.0 m/s
c)
16 m/s
d)
17 m/s
6.
The baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt.  At what point in the ball's path does it experience zero velocity and nonzero acceleration at the same time?
a)
midway on the way up
b)
at the top of its trajectory
c)
the instant it leaves the catcher's hand
d)
the instant before it arrives in the catcher's mitt
7.
A rock is thrown straight upward with an initial velocity of 24.5 m/s.  What is the rock's displacement after 1.00 s?
a)
9.8 m/s2
b)
19.6 m/s2
c)
24.5 m/s2
d)
29.4 m/s2
8.
When there is no air resistance, objects of different masses...
a)
fall with equal accelerations with similar displacements
b)
fall with different accelerations with different displacements
c)
fall with equal accelerations with different displacements
d)
fall with different accelerations with similar displacements
9.
A car travels down a road at a certain velocity, vcar.  The driver slows down so that the car is traveling only half as fast as before.  Which of the following is the correct expression for the resulting velocity?
a)
2vcar
b)
1/2 vcar
c)
-1/2 vcar
d)
-2 vcar
10.
A football player runs in one direction to catch a pass, then turns and runs twice as fast in the opposite direction toward the goal line.  Which of the following is the correct expression for the original velocity and the resulting velocity?
a)
-v, -2v
b)
v, 2v
c)
v, -2v
d)
2v, -v
11.
In a coordinate system, the x-component of a given vector is equal to that vector's magnitude multiplied by which trigonometric function, with respect to the angle between the vector and the x-axis
a)
the cosine of θ
b)
the sine of θ
c)
the tangent of θ
d)
the cotangent of θ
12.
An athlete runs 110 m across a level field at an angle of 30o north of east.  What are the east and north components, respectively, of this displacement? 
a)
64 m, 190 m
b)
190 m, 64 m
c)
95 m, 55 m
d)
55 m, 95 m
13.
A passenger on a bus moving east sees a man standing on a curb. From the passenger's perspective, the man appears to...
a)
stand still
b)
move west at a speed that is less than the bus's speed
c)
move west at a speed that is equal to the bus's speed
d)
move east at a speed that is equal to the bus's speed
14.

Which runner had a head start? (a)  

Choose from the below words
A
B
C
15.

Describe the motion (a)  

Choose from the below words
Slow to fast; Negative direction
Fast to slow; Negative direction
Fast to slow; Positive direction
Slow to fast; Positive direction
16.

from 3rd second to 5th second, the object is (a)  

Choose from the below words
moving at a constant speed
speeding up
not moving
slowing down
17.

What does this graph represent? (a)  

Choose from the below words
Constant speed
Acceleration
Not moving
18.

On a distance vs. time graph, the steeper the slope the (a)   the speed.

19.

What is happening at E?

a)

Stationary

b)

Accelerating

c)

Fast steady speed; moving away from the starting position

d)

Steady speed; returning to start position

20.

How long did it take this object to travel back to its reference/starting point? (a)  

Choose from the below words
20 s
30 s
60 s
100 s
21.

What is happening in this graph from point B to C?

a)

The object is going down a hill.

b)

The object is returning to its starting location.

c)

The object is slowing down.

d)

The object is staying still.

22.

The speed of the object is changing during interval: (a)  

Choose from the below words
A-B
B-C
C-D
D-E
23.

From t=1.0 second to t=3.0 seconds, the object is (a)  

Choose from the below words
moving at a constant speed
speeding up
not moving
slowing down
24.

(Multiple selection: Select all that apply)

On a position-time graph, the position is plotted on the ____ axis.

a)

y-axis

b)

vertical axis

c)

x-axis

d)

horizontal axis

25.

According to the graph how far does the person travel in the first 5 seconds? (a)  

Choose from the below words
2 m
10 m
0 m
5 m
26.

What is the person doing from 5 seconds to 10 seconds? (a)  

Choose from the below words
Walking 
Running
Standing Still 
Walking Fast
27.

What is happening between 2 and 3 seconds? (a)  

Choose from the below words
The object is not moving.
The object is not accelerating.
The object is slowing down.
The object is speeding up.
28.
What is happening between 3 seconds and 4 seconds?
a)
The object is moving in a negative direction.
b)
The object is returning to its starting position.
c)
The object is slowing to a stop.
d)
The object is changing direction.
29.
What happens at 4 seconds?
a)
The object changes direction.
b)
The object is at the starting point.
30.
What is happening between 4 and 5 seconds?
a)
The object is slowing down in a negative direction.
b)
The object is slowing down in a positive direction.
c)
The object is slowing down in a negative direction.
d)
The object is speeding up in a negative direction.
31.

Which expression has the same dimensions as an expression yielding a value for acceleration (m/s2)?

a)

vt2\frac{v}{t^2}

b)

vx2\frac{v}{x^2}

c)

v2t\frac{v^2}{t}

d)

v2x\frac{v^2}{x}

32.

Which expression has the same dimensions as an expression yielding a value for time? (a)  

a)

xv\frac{x}{v}

b)

xv2\frac{x}{v^2}

c)

tx\frac{t}{x}

d)

1v2t\frac{1}{v^2t}

33.

Which of the following equations is dimensionally correct?

(Multiple selection question: Select all that apply)

a)

Δt=Δxv\Delta t=\frac{\Delta x}{v}

b)

a=v2xa=\frac{v^2}{x}

c)

Δv=aΔt\Delta v=\frac{a}{\Delta t}

d)

Δt2=2Δxa\Delta t^2=\frac{2\Delta x}{a}

34.

A hiker travels south along a straight path for 1.5 h with an average velocity of 0.75 km/hr, then travels south for 2.5 h with an average velocity of 0.90 km/hr.  What is the hiker's displacement for the total trip? (a)  

Choose from the below words
1.1 km to the south
2.2 km to the south
3.4 km to the south
6.7 km to the south
35.

A toy car is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s2.  What is the final velocity after 6.0 s? (a)  

Choose from the below words
10.0 m/s
12.0 m/s
16 m/s
17 m/s
36.
The baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt.  At what point in the ball's path does it experience zero velocity and nonzero acceleration at the same time?
a)
midway on the way up
b)
at the top of its trajectory
c)
the instant it leaves the catcher's hand
d)
the instant before it arrives in the catcher's mitt
37.

A rock is thrown straight upward with an initial velocity of 24.5 m/s.  What is the rock's displacement after 1.00 s? (a)  

Choose from the below words
9.8 m/s2
19.6 m/s2
24.5 m/s2
29.4 m/s2
38.
When there is no air resistance, objects of different masses...
a)
fall with equal accelerations with similar displacements
b)
fall with different accelerations with different displacements
c)
fall with equal accelerations with different displacements
d)
fall with different accelerations with similar displacements
39.

A car travels down a road at a certain velocity, v.  The driver slows down so that the car is traveling only half as fast as before.  Which of the following is the correct expression for the resulting velocity? (a)  

Choose from the below words
2v
(1/2)v
-(1/2)v
-2v
40.

A football player runs in one direction to catch a pass, then turns and runs twice as fast in the opposite direction toward the goal line.  Which of the following is the correct expression for the original velocity and the resulting velocity? (a)  

Choose from the below words
-v, -2v
v, 2v
v, -2v
2v, -v
41.

If a student wants to solve for the horizontal length of a triangle and they know the hypotenuse and its angle, which trigonometric function could they use?

​ ​ ​ (a)  

Choose from the below words
the cosine of θ
the sine of θ
the tangent of θ
42.

An athlete runs 110 m across a level field at an angle of 30 degrees north of east.  What are the east and north components, respectively, of this displacement?  (a)  

Choose from the below words
64 m, 190 m
190 m, 64 m
95 m, 55 m
55 m, 95 m
43.
A passenger on a bus moving east sees a man standing on a curb. From the passenger's perspective, the man appears to...
a)
stand still
b)
move west at a speed that is less than the bus's speed
c)
move west at a speed that is equal to the bus's speed
d)
move east at a speed that is equal to the bus's speed
44.

To determine an object's acceleration using a Velocity-time graph I should...

a)

Look at the vertical axis for that time

b)

Determine the area between the graph & the x axis up to that time

c)

See whether the graph is above or below the x axis at that time

d)

Solve for the slope of the graph at that time

45.

To determine which way an object is moving on a Velocity-time graph I should...

a)

Look at the vertical axis for that time

b)

Determine the area between the graph & the x axis up to that time

c)

See whether the graph is above or below the x axis at that time

d)

Solve for the slope of the graph at that time

46.

To determine how fast an object is moving on a Velocity-time graph I should...

a)

Look at the vertical axis for that time

b)

Determine the area between the graph & the x axis up to that time

c)

See whether the graph is above or below the x axis at that time

d)

Solve for the slope of the graph at that time

47.

To determine how far an object travels using a Velocity-time graph I should...

a)

Look at the vertical axis for that time

b)

Determine the area between the graph & the x axis up to that time

c)

See whether the graph is above or below the x axis at that time

d)

Solve for the slope of the graph at that time

48.

Describe the motion of an object given by the velocity vs time graph.

a)

It is speeding up.

b)

it is not moving.

c)

It has a constant speed.

d)

It is slowing down.

49.

Describe the motion of an object given by the velocity vs time graph.

a)

It is speeding up.

b)

it is not moving.

c)

It has a constant speed.

d)

It is slowing down.

50.

Describe the motion of an object given by the velocity vs time graph.

a)

It is speeding up.

b)

it is not moving.

c)

It has a constant speed.

d)

It is slowing down.

51.

Describe the motion of an object given by the velocity vs time graph.

a)

It is speeding up.

b)

it is not moving.

c)

It has a constant speed.

d)

It is slowing down.

52.

Describe the acceleration of an object given by the velocity-time graph.

a)

acceleration is zero

b)

acceleration is positive

c)

acceleration is negative

53.

Describe the acceleration of an object given by the velocity-time graph.

a)

acceleration is zero

b)

acceleration is positive

c)

acceleration is negative

54.

Describe the acceleration of an object given by the velocity-time graph.

a)

acceleration is zero

b)

acceleration is positive

c)

acceleration is negative

55.

Describe the motion of an object given by the velocity-time graph.

a)

moving forward, speeding up

b)

moving backward, speeding up

c)

moving forward, slowing down

d)

moving backward, slowing down

56.

Describe the motion of an object given by the velocity-time graph.

a)

moving forward, speeding up

b)

moving backward, speeding up

c)

moving forward, slowing down

d)

moving backward, slowing down

57.

In the velocity-time graph shown, at which time was the object traveling the fastest?

a)

10 s

b)

20 s

c)

30 s

d)

40 s

58.

In the velocity-time graph shown, how far did the object travel in the first 10 seconds?

a)

30 m

b)

60 m

c)

300 m

d)

600 m

59.

For the velocity-time graph shown, which best describe the motion for 10-15 s?

a)

not moving, not accelerating

b)

moving forward, not accelerating

c)

moving backward, not accelerating

d)

moving forward, accelerating forward

60.

For the velocity-time graph shown, which interval had the greatest acceleration?

a)

0-10s

b)

10-15s

c)

15-40s

d)

40-55s

61.

For the velocity-time graph shown, at what time does the object change directions?

a)

10s

b)

15s

c)

30s

d)

40s

62.

d

a)

distance / displacement

b)

direction

c)

velocity

d)

acceleration

63.

vi

a)

velocity

b)

initial velocity

c)

final velocity

d)

acceleration

64.

vf

a)

velocity

b)

initial velocity

c)

final velocity

d)

acceleration

65.

a

a)

velocity

b)

distance

c)

acceleration

d)

accuracy

66.

acceleration units

a)

m/s

b)

m/s2

c)

m2/s2

d)

m

67.

distance or displacement units

a)

m/s

b)

m/s2

c)

m2/s2

d)

m

68.

Slope of a position time graph gives you:

a)

change in position

b)

velocity

c)

acceleration

d)

y=mx+b!!!

69.

time units (that we use in physics)

a)

s

b)

min

c)

hr

d)

year

70.

gravity is a(n)

a)

acceleration

b)

initial velocity

c)

final velocity

d)

distance

71.

Select all that are correct: In free fall, if I drop an object

a)

the initial velocity is 0 m/s

b)

the final velocity is 0 m/s

c)

the acceleration is 10 m/s2

d)

it speeds up as it falls

72.

The graph shows Ashley riding her bike to Maria's house.

What is occurring from point A to point B?

a)

they are traveling at a constant speed

b)

they are slowing down

c)

they stopped to take a break

d)

they are speeding up

73.

The graph shows Ashley riding her bike to Maria's house.

What was occurring from point B to point C?

a)

She was increasing her speed.

b)

She stopped

c)

She was decreasing in speed

d)

She was moving at a constant velocity

74.

The graph shows Ashley riding her bike to Maria's house.

What was her average speed for the ENTIRE trip?

a)

80 m/min

b)

200 m/min

c)

160 m/min

d)

0.8 m/min

75.
The rate at which velocity CHANGES is: 
a)
acceleration
b)
speed
c)
direction
d)
physics
76.

The graph represents

a)

speeding up

b)

no motion

c)

slowing down

d)

constant velocity

77.
Which quantity is a vector?
a)
Displacement
b)
Distance
78.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
79.
Find the velocity of a truck that travels 75 miles north in 2.5 hours.
a)
187.5 mi/hr north
b)
30 mi/hr north
c)
30 mi/hr
d)
187.5 mi/hr 
80.

What is speed?

a)

how far you go

b)

how far you go for a given amount of time

c)

how fast you accelerate

d)

the change in the location of a object

81.

What is velocity?

a)

the quickness of an object

b)

the location of an object in a specific direction

c)

the acceleration of an object

d)

how fast an object is going in a specific direction

82.

Percival travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is their distance?

a)

10 mi

b)

7 mi

c)

8 mi

d)

6 mi

83.

Slim Jim runs exactly 2 laps around a 400 meter track. What is the magnitude of their displacement?

a)

800 m

b)

400 m

c)

0 m

d)

200 m

84.
What kind of quantity has both a magnitude and a direction?
a)
scalar
b)
vector
c)
frame of reference
d)
time
85.
A person walks 50 meters directly north, stops, and then travels 32 meters directly south.  What is their displacement?
a)
82 meters
b)
18 meters
c)
28 meters
d)
1.6 meters
86.

Wilamina cycles at an average speed of 8km/h. How far has this person traveled if they cycle for 4 hours?

a)

55 km

b)

32 km

c)

43 km

d)

32 miles

87.

Mrs Gallenstein travels 100 km in 5 hrs. Find this person's average speed in km/h

a)

5 km/hr

b)

10 km/hr

c)

50 km/hr

d)

20 km/hr

88.

Mrs. Scull drives for 400 km at an average speed of 80 km/h. How long was her journey?

a)

Mrs. Scull's journey was 5 hrs long

b)

Mrs. Scull's journey was 10 hrs long

c)

Mrs. Scull's journey was 20 hrs long

d)

Mrs. Sculls journey was 15 hrs long

89.
Which is correct?
a)
speed = distance x time
b)
speed = speed ÷ time
c)
speed = distance ÷ time
d)
speed = time x speed
90.

Ray runs 30 feet north, 30 feet west, and then 30 feet south. What is the displacement?

a)

30 feet west

b)

90 feet

c)

30 feet south

d)

0 feet

91.

Mr. Stick Stickerson walks 50 meters directly north, stops, and then travels 32 meters directly south. What is their distance?

a)

82 meters

b)

18 meters

c)

28 meters

92.

The shortest path from the beginning to end is the

a)

scalar

b)

vector

c)

distance

d)

displacement

93.
Direction and magnitude can be represented by an arrow is a
a)
vector
b)
scalar
c)
speed
d)
distance
94.

How many meters is 63 km?

a)

63,000 meters

b)

0.063 meters

c)

63 meters

95.

How many kilometers is 63 meters?

a)

0.063 kilometers

b)

63,000 kilometers

c)

63 kilometers

96.

How many grams is 63 kilograms?

a)

63,000 grams

b)

0.063 grams

c)

63 grams

97.

How many kilograms is 63 grams?

a)

0.063 kilograms

b)

63,000 kilograms

c)

63 kilograms

98.

How many seconds are in 1 hour?

a)

60 seconds

b)

3600 seconds

c)

100 seconds

99.

If you drop a banana, how fast is it going after 2 seconds?

a)

5 m/s

b)

10 m/s

c)

20 m/s

d)

30 m/s

100.

If you throw a baseball straight up, what is its velocity at the highest point?

a)

10 m/s2

b)

10 m/s

c)

0 m/s2

d)

0 m/s

101.
The more mass an object has, the faster it will fall.
a)
True
b)
False
102.

What is the horizontal acceleration of a projectile?

a)

0 m/s2

b)

10 m/s2

103.

What is the vertical acceleration of a projectile?

a)

0 m/s2

b)

10 m/s2

104.
If I throw a crayon straight up at 12m/s, how fast is its speed when i catch it at the same height?
a)
6 m/s
b)
12 m/s
c)
18 m/s
d)
24 m/s
105.

What is the shape of the path of any projectile?

a)

Hyperbola

b)

Hypotenuse

c)

Parabola

d)

Diagonal

e)

Trajectory

106.
Does vertical velocity change as a projectile rises and falls?
a)
yes 
b)
no
107.

Does horizontal velocity change as a projectile rises and falls?

a)

yes

b)

no

108.
Which statement describes a vector?
a)
It has magnitude but no direction
b)
It has direction but no magnitude
c)
It has both direction and magnitude
d)
It has constant magnitude but no
 direction
109.

At its peak, a projectile has a velocity of 0 m/s

a)

True

b)

False

110.

The time it takes for a projectile to reach the ground is based only on

a)

The launching height

b)

The launching speed

c)

How far the projectile lands from the launch horizontally

d)

The horizontal acceleration

111.

Which of the following pictures correctly depicts the motion of a horizontally launched object?

a)
b)
c)
d)
112.
An object is projected horizontally from a cliff.  The time it takes to hit the ground is
a)
more than if it was just dropped
b)
less than if it was just dropped
c)
the same amount of time than if it was just dropped
d)
impossible to determine
113.
As an object travels through the air, its vertical velocity 
a)
changes continuously
b)
remains the same
114.
When a ball is projected horizontally, what is its initial vertical velocity?
a)
10
b)
0
c)
not enough information given
115.

Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object has the greatest range (horizontal distance)?

a)

A

b)

B

c)

Both objects reach the maximum height

d)

unable to determine with the given information

116.
A car is traveling at 21.0 m/s. It slows to a stop at a constant rate over 5.00 s. How far does the car travel during those 5.00 seconds before it stops? 
a)
4.20 m
b)
52.5 m
c)
105 m
d)
158 m
117.
Motion sensors recorded the following data about a runner during a cross-country race. During which segment of the race did the runner have the greatest speed?
a)
W
b)
X
c)
Y
d)
Z
118.
An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?
a)
6.30 m
b)
17.5 m
c)
27.2 m
d)
40.0 m
119.
What happens to the total distance that a ball travels as it falls off the side of a cliff?
a)
The distance remains constant 
b)
The distance increases at a uniform rate
c)
The distance increases at a nonuniform rate 
d)
The distance decreases at a uniform rate
120.
What happens to the velocity of a ball as it is dropped off a cliff? 
a)
It decreases at a uniform rate 
b)
It increases at a uniform rate 
c)
It is constant 
d)
It increases at a non-uniform rate
121.
A ball is thrown in the air with an initial velocity of 40 m/s. How long does it take to reach back to the point it was thrown from?
a)
About 4 seconds 
b)
About 2 seconds 
c)
About 6 seconds 
d)
About 8 seconds 
122.
Describe the motion
a)
Speeding up;    Moving in negative direction
b)
Speeding up;   Moving in positive direction
c)
Slowing down;   Moving in positive direction
d)
Slowing down;   Moving in negative direction
123.
Describe the motion in segment A
a)
Slowing down;  Positive direction
b)
Slowing down;  Negative direction
c)
Constant velocity;   Positive direction
d)
Constant velocity;  Negative direction
124.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
125.
What would the position-time graph look like for an object travelling at a constant velocity? 
a)
Horizontal line
b)
Straight line
c)
Curved line
126.
Find the velocity of a plane that traveled 3000 miles South in 5 hours.
a)
60 mi/hr, S
b)
600 mi/hr
c)
600 mi/hr, S
d)
600 mi/hr, N
127.
In the absence of air friction, an object thrown into the air will take _______ to rise than it does to fall.
a)
more time
b)
less time
c)
the same amount of time
128.
In the presence of air friction, an object thrown into the air will return to the ground with ______ it was thrown up at.
a)
a greater velocity than
b)
a lesser velocity than
c)
the same velocity
129.
In the absence of air friction, an object thrown into the air will return to the ground with ______ it was thrown up at.
a)
a greater velocity than
b)
a lesser velocity than
c)
the same velocity
130.
When a ball is projected horizontally, what is its initial vertical velocity?
a)
10
b)
0
c)
not enough information given
131.
A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be 
a)
less than the speed it had when thrown upwards.
b)
more than the speed it had when thrown upwards.
c)
the same as the speed it had when thrown upwards.
132.

If you throw a baseball straight up, what is its acceleration at the highest point?

a)

-9.8 m/s2

b)

9.8 m/s2

c)

0 m/s2

d)

0 m/s

133.
At which point along this projectile's path is the vertical component of the velocity in the same direction as the acceleration?
a)
A
b)
B
c)
C
d)
ALL OF THEM
134.

At which point along this projectile's path is the horizontal component of the velocity equal to the initial horizontal velocity?

a)

A

b)

B

c)

C

d)

ALL OF THEM

135.

At which point along this projectile's path is the acceleration constant?

a)

A

b)

B

c)

C

d)

At all points

136.
Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object has the greatest maximum height height?
a)
A
b)
B
c)
Both objects reach the maximum height
d)
unable to determine with the given information
137.
Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object will hit the ground first?
a)
A
b)
B
c)
Both objects hit the ground at the same time
d)
unable to determine with the given information
138.
A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. What is the vertical component of the cannonball’s velocity? What is the horizontal component of the cannonball’s velocity?
a)
-625 m/s; 625 m/s
b)
441.9 m/s; 441.9 m/s
c)
-441.9 m/s; 441.9 m/s
d)
0 m/s; 625 m/s
139.
A cannon ball is launched at a 45 degree angle from the ground, when is its acceleration the greatest?
a)
it is the same everywhere
b)
at the top
c)
at the bottom
d)
swag
140.
A cannonball is fired at a 45.0° angle and an initial velocity of 625 m/s. Assume no air resistance. How long until the cannonball hits the ground?
a)
75.4 s
b)
45.2 s
c)
62.3 s
d)
90.2 s
141.

Consider a ball thrown up from the surface of the earth into the air at an angle of 300 above the horizontal. Air friction is negligible. Just after the ball is released, its acceleration is:

a)

Upwards at 9.8 m/s2

b)

Upwards at 4.9 m/s2

c)

Downwards at 9.8 m/s2

d)

0 m/s2

e)

None of the above

142.

In a lab experiment, a ball is rolled down a ramp so that it leaves the edge of the table with a horizontal velocity v. If the table has a height h above the ground, how far away from the edge of the table, a distance x, does the ball land? You may neglect air friction in this problem.

a)
b)
c)
d)
143.

A rock is thrown into the air at an angle relative to the vertical, and follows the path shown here. Consider air friction to be negligible. What is the direction of the net acceleration of the rock at point D?

a)

to the left

b)

to the right

c)

straight up

d)

straight down

e)

there is no net acceleration at point D

144.

A projectile is fired horizontally from a height of 20 m above the ground, with an initial velocity of 7.0 m/s. How far does the projectile travel horizontally before it reaches the ground?

a)

7m

b)

14m

c)

140m

d)

3.5m

e)

20m

145.

Four students went out for pizza to celebrate after acing their physics final. All of them went directly from their high school to the nearby pizzeria, but they returned along the paths shown, taking different times. Values for the roundtrip distances they traveled and the total times they took to walk their routes are given in the figures. Rank the magnitudes of the average velocities of the students’ trips and explain your reasoning.

a)

C > B > A > D

b)

C > B > D > A

c)

A > C > B > D

d)

All zero

e)

Cannot determine

146.

A ball is thrown into the air at an angle Ө as measured from the horizontal with a velocity v. The horizontal velocity of the ball will be directly proportional to which of the following:

a)

The angle Ө

b)

The sine of the angle Ө

c)

The cosine of the angle Ө

d)

The tangent of the angle Ө

e)

The value of the gravitational acceleration

147.

Two balls, identical except for color, are projected horizontally from the roof of a tall building at the same instant. The initial speed of the red ball is twice the initial speed of the blue ball.

Which ball hits the ground first?

a)

The red ball

b)

The blue ball

c)

Both hit the ground at the same time

d)

The answer cannot be calculated

148.

Two balls, identical except for color, are projected horizontally from the roof of a tall building at the same instant. The initial speed of the red ball is twice the initial speed of the blue ball.

Which ball has a larger speed upon hitting the ground?

a)

The red ball

b)

The blue red

c)

Both hit the ground at the same time

d)

The answer cannot be calculated

149.

Two arrows are launched at the same time with the same speed. Arrow A at an angle greater than 45 degrees, and arrow B at an angle less than 45 degrees. Both land at the same spot on the ground. Which arrow arrives first?

a)

Arrow A arrives first

b)

Arrow B arrives first

c)

They both arrive together

d)

It depends on the elevation where the arrows are launched

e)

It depends on the elevation where the arrows land

150.

A diver initially moving horizontally with speed V dives off the edge of a vertical

cliff and lands in the water a distance d from the base of the cliff. How far from the base

of the cliff would the diver have landed if the diver initially had been moving

horizontally with speed 2V?

a)

d

b)

2d

c)

d square root of 2

d)

4d

e)

It cannot be determined unless you know the height of the hill

151.

A projectile is fired with initial velocity V0 at an angle Ө0 with the horizontal and

follows the trajectory shown above. Which of the following pairs of graphs best

represents the vertical components of the velocity and acceleration, V and a,

respectively, of the projectile as a function of time t?

a)
b)
c)
d)
e)
152.

A projectile has an initial velocity of magnitude Vo which makes an angle Ө0

with the horizontal. Neglecting air friction, all of the following are true at point P, the

highest point of its trajectory EXCEPT:

a)
b)
c)
d)
e)

The acceleration is g

153.

An object travels along a path shown above, with changing velocity as indicating by vectors A and B. Which vector best represents the net acceleration of the object from time tA to tB?

a)
b)
c)
d)
e)
154.

Vectors M and N obey the equation M + N = 0. These vectors satisfy which one of the following statements:

a)

Vectors M and N are at right angles to each other

b)

Vectors M and N point in the same direction

c)

Vectors M and N have the same magnitude

d)

The magnitude of M is negative of the magnitude of N

155.

A large beach ball is dropped from the ceiling of a school gymnasium to the floor about 10 meters below. Which of the following graphs would best represent its velocity as a function of time? (do not neglect air resistance)

a)
b)
c)
d)

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