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Walker Physics Semester 1 Exam Review (Chs 1-5.1)

Total questions: 130

Worksheet time: 2hrs 8mins

Name
Class
Date
1.

When any object is thrown through the air, the shape object's path can be described mathematically as _________________.

a)

Linear

b)

Curved

c)

Hyperbolic

d)

Parabolic

2.

In projectile motion, the y component of the velocity thrown at an angle Θ can be found by which of the following?

a)

vocosΘ

b)

vossinΘ

c)

votanΘ

d)

vocotΘ

3.

In solving projectile motion problems, motion in the x and y directions can be solved independently.

a)

True

b)

False

4.

The greater the angle, Θ, at which an object is launched with the same initial velocity,

a)

... the higher the object will go.

b)

... the further the object will go.

c)

... has no effect of either the height or distance the object will travel.

5.

A ball is rolled off a table with velocity "v" in the horizontal direction and travels a distance of d. How far will the ball travel if the velocity is doubled?

a)

d (there is no effect on the distance)

b)

sqrt (d)

c)

2d

d)

There is not enough information to determine the distance.

6.

Mary is running at 1.5 m/s to catch a plane and finds a moving walkway moving at a speed of 0.5 m/s. Madi is sitting drinking a latte watching the crazy lady run. What speed does Madi perceive Mary to be running?

a)

1.0 m/s

b)

1.5 m/s

c)

2.0 m/s

d)

3.0 m/s

7.

A boy standing on a balcony drops one ball and throws another with an initial horizontal velocity of 3 m/s. Which of the following statements is accurate?

a)

The balls fall with a constant vertical velocity and a constant horizontal acceleration.

b)

The balls fall with a constant vertical velocity as well as a constant horizontal velocity.

c)

The balls fall with a constant vertical acceleration and a constant horizontal velocity.

d)

The balls fall with a constant vertical acceleration and an increasing horizontal velocity.

8.

Tip is practicing with a slingshot -- dangerous I know -- so he can accurately play King David in a re-creation of the story of David and Goliath. He releases a 500 g stone after getting it going very quickly. What can be said about the path of the stone?

a)

The stone continues in the circle because of Newton's First Law.

b)

The stone quickly falls to the ground

c)

The stone flies out at the same velocity in a line tangent to the circle at the moment of release.

d)

None of the other questions adequately describe the stone's motion.

9.

Estimate (using g=10.0m/s) the time it will take for a marble to reach the ground if it dropped off of the 10.0 m-high building.

a)

0.7 s

b)

1.4 s

c)

2.0 s

d)

4.5 s

10.

What is a displacement?

a)

a change in position

b)

a change in the origin

c)

a coordinate system

d)

two different origin points

11.

What is a vector?

a)

a type of variable with the same origin point

b)

a type of variable that includes direction as well as size

c)

a variable with only positive values and shows direction

d)

a displacement with no direction and no magnitude

12.

A scalar does not depend on _____.

a)

position

b)

distance

c)

magnitude

d)

direction

13.

All of the following are scalar values EXCEPT ____.

a)

distance

b)

mass

c)

displacement

d)

temperature

14.

What is the difference between distance and displacement?

a)

both show movement, so they are the same

b)

one is a vector and the other is a scalar

c)

distance shows direction, displacement does not

d)

distance shows the origin, displacement does not

15.

With a vector, what kind of information is carried by the positive and negative signs?

a)

the direction

b)

the size

c)

the math function

d)

the coordinates

16.

What is the "magnitude" of a vector?

a)

the units of the vector show magnitude

b)

the sign of the vector shows magnitude

c)

the length of the vector shows magnitude

d)

the direction of the vector shows magnitude

17.

The north-south axis and east-west axis provide what?

a)

a distance point

b)

a reference line

c)

a positive and negative sign

d)

a vector line

18.

What shape does a projectile make?

a)

Parabola

b)

Hyperbola

c)

Linear Line

d)

Projectiles do not follow a predictable path

19.

When solving two dimensional problems, what variable is shared between the x and y directions?

a)

Acceleration

b)

Displacement

c)

Time

d)

Velocity

20.

Vectors in two dimensions are ___________

a)

Opposite

b)

Equal

c)

Dependent

d)

Independent

21.

Two objects are released at the same time. One object is dropped in the vertical direction and one is launched horizontally into projectile motion. Which object hits the ground first?

a)

Both hit the ground at the same time

b)

The object dropped hits the ground first

c)

The object launched horizontally hits the ground first

d)

Unable to determine without further information

22.

A soccer ball is kicked and follows the path as shown. At which point is the vertical acceleration equal to - 9.80 ms2\frac{m}{s^2}  ?

a)

X

b)

Y

c)

Both X and Y

d)

Neither X nor Y

23.

Two identical balls, X and Y, are projected horizontally from the edge of a cliff. The path of each ball is shown in the picture. Which of the following statements are true (mark all that apply)?

a)

They have the same initial horizontal speed

b)

They have the same vertical acceleration

c)

They have the same initial vertical velocity

d)

They take the same amount of time to reach the water

24.

A rock is thrown in the air as shown in the picture. At which point does vy = 0 msv_y\ =\ 0\ \frac{m}{s}  ?

a)

A

b)

B

c)

C

d)

D

e)

E

25.

A rock is thrown in the air as shown in the picture. If it takes 5 seconds to reach point D, how long will take the rock to reach the ground from point D?

a)

2.5 s

b)

5 s

c)

10 s

d)

1 s

26.

Based on the picture, how would you find the vertical component of the soccer ball's velocity?

a)

20 ms×sin⁡(30°)20\ \frac{m}{s}\times\sin\left(30\degree\right)  

b)

20 ms×cos⁡(30°)20\ \frac{m}{s}\times\cos\left(30\degree\right)  

c)

20 ms×tan⁡(30°)20\ \frac{m}{s}\times\tan\left(30\degree\right)  

d)

20 ms20\ \frac{m}{s}  

27.

Based on the picture, how would you find the horizontal component of the soccer ball's velocity?

a)

20 ms×sin⁡(30°)20\ \frac{m}{s}\times\sin\left(30\degree\right)  

b)

20 ms×cos⁡(30°)20\ \frac{m}{s}\times\cos\left(30\degree\right)  

c)

20 ms×tan⁡(30°)20\ \frac{m}{s}\times\tan\left(30\degree\right)  

d)

20 ms20\ \frac{m}{s}  

28.

When vectors form a right angle, we can find the resultant vector by using:

a)

The quadratic equation

b)

Addition

c)

The Pythagorean Theorem

d)

Subtraction

29.

While at the airport, you walk on a moving walkway which moves with a speed of 1.80 m/s with respect to the surrounding corridor. You walk with a speed of 2.20 m/s with respect to the walkway. What is your speed with respect to the surrounding corridor?

a)

4.00 m/s

b)

0.40 m/s

c)

3.96 m/s

d)

1.22 m/s

30.

Your boat's top speed is 10 m/s. If you travel at that stop speed but are fighting against a 2 m/s current, what is your speed relative to the shore?

a)

5 m/s

b)

20 m/s

c)

12 m/s

d)

8 m/s

31.

When an object is undergoing projectile motion, which of the following are constant? Check all that apply.

a)

vyv_y  

b)

vxv_x  

c)

axa_x  

d)

aya_y  

32.

A care package is dropped from a plane. Which of the paths shown in the picture will the package take?

a)

A

b)

B

c)

C

d)

D

e)

E

33.

This position vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

34.

This position vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

35.

This position vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

36.

This velocity vs. time graph shows an object...


(Hint: For this graph, the velocity is 0 m/s!)

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

37.

This velocity vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

38.

This velocity vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

39.

This position vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

40.

This position vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

41.

This velocity vs. time graph shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

42.

Which of these position vs. time graphs shows an object changing direction?

a)
b)
c)
d)
43.

Which of these velocity vs. time graphs shows an object changing direction?

a)
b)
c)
d)
44.

This motion map shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

45.

This motion map shows an object...

a)

not moving

b)

moving with constant velocity

c)

moving with changing velocity

46.

This position vs. time graph shows an object...

a)

speeding up

b)

slowing down

47.

This position vs. time graph shows an object...

a)

speeding up

b)

slowing down

48.

A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

a)

750 seconds

b)

35 seconds

c)

0.3 seconds

d)

3.3 seconds

49.

A roller coaster accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?

a)

24 m/s2

b)

18 m/s2

c)

16 m/s2

d)

16 m/s

50.
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
a)
2.2m/s2
b)
7.0m/s2
c)
5.7m/s2
d)
70m/s2
51.
Acceleration is defined as the CHANGE in 
a)
time it takes for one place to move to another place. 
b)
velocity of an object.
c)
distance divided by the time interval 
d)
velocity divided by the time interval 
52.

Why does a car accelerate as it rounds a corner at a constant speed?

a)

Its direction changes

b)

It doesn't

c)

It slows down

d)

Its speeds up

53.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
54.

In each of the following cases, determine where the car has no acceleration.

a)

A car speeds up after a stoplight turns green.

b)

A car slows down as it approaches a red light

c)

A car with the cruise control set at 80 km/h going down a straight highway

d)

A car turning a curve at a constant speed

55.

When are you undergoing an acceleration in a car? (Choose all that are correct)

a)

speed up

b)

slow down

c)

make turns

d)

constant speed

56.

A fighter jet goes from +100 m/s to + 230 m/s in a time of 10 s. What was its acceleration?

a)

-10 m/s2

b)

+33 m/s2

c)

-23 m/s2

d)

+13 m/s2

57.

A negative acceleration means that your object is  

a)

constant

b)

speeding up

c)

at rest

d)

slowing down

58.

A positive acceleration means that your object is

a)

at rest

b)

speeding up

c)

moving

d)

slowing down

59.

As the ball falls towards the ground, its velocity

a)

zero

b)

decreases

c)

at rest

d)

increases

60.

A bus starts from rest and accelerates to 14 m/s in 4 s. What is the average acceleration of the bus?

a)

3.5 m/s2

b)

5.9 m/s2

c)

10.5 m/s2

d)

24 m/s2

61.
What is the force that pulls us towards the Earth?
a)
gravity
b)
weight
c)
friction
d)
mass
62.

The formula for calculating avg acceleration is 

(vf−vi)t\frac{\left(v_f-v_i\right)}{t}  True or False

a)

True

b)

False

63.

What does the slope of this graph represent?

(a)  

64.

Dorothy was initially at rest. She sped up to 9 m/s in 24 seconds. What was her acceleration?

a)

2.7 m/s2

b)

-2.7 m/s2

c)

-0.375 m/s2

d)

0.375 m/s2

65.

A rocket started at rest. After initiating the launch, it had an acceleration of 90 m/s2. How long did it take to reach a speed of 2430 m/s?

a)

13.5 s

b)

65610 s

c)

27 s

d)

32805 s

66.

A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What is its acceleration?

a)

4.29 m/s3

b)

4.29 m/s2

c)

4.29 m/s1

d)

4.29 m/s

67.
A student starts cycling from rest and reaches a speed of 12 m s-1 in 6 seconds. The distance travelled by him is
a)
18 m
b)
36 m
c)
54 m
d)
72 m
68.
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
69.

An object free falls for 3.5 seconds. How far does it fall?

a)

120.05 m

b)

17.15 m

c)

60.03 m

d)

34.3 m

70.
If you throw a baseball straight up, what is its velocity at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
71.

A baseball is thrown up into the air. What happens to the acceleration as the ball rises in the air?

a)

the acceleration increases

b)

the acceleration decreases

c)

the acceleration remains constant

72.

A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?

a)

the velocity increases

b)

the velocity decreases

c)

the velocity remains constant

73.

The standard acceleration due to gravity (or standard acceleration of free fall),is the nominal gravitational acceleration of an object in a vacuum near the surface of the Earth. It is defined by standard as:

a)

9.8 m/s.

b)

9.8 m.

c)

9.8 m/s2.

d)

9.8 s.

74.

If an object is in free fall for three seconds, how fast will it be falling?

a)

9.8 m/s

b)

19.6 m/s

c)

29.4 m/s

d)

39.2 m/s

75.

Heavier objects free fall faster than lighter objects.

a)

True

b)

False

76.
A pumpkin is dropped from a 35 m building. What is its initial velocity (vi)?
a)
9.8 m/s2
b)
35 m
c)
0 m/s
d)
9.8 m/s
77.

A free falling objects falls under the influence of the

a)

force of air

b)

force of gravity

c)

force of resistance

d)

net force

78.

What is acceleration of an object flying upward during free fall?

a)

+ 9.8 m/s2

b)

- 9.8 m/s2

c)

+ 9.8 m/s

d)

-9.8 m/s

79.
Which would fall with greater acceleration in a vacuum—a leaf or a stone?
a)
the leaf
b)
the stone
c)
They would accelerate at the same rate.
d)
It is difficult to determine without more information.
80.
 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 decreasing in speed
c)
they stopped to take a break
81.
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 for 4 minutes
c)
She was decreasing in speed
82.
Speed =
a)
distance / time
b)
time / distance
c)
distance * time
83.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
84.
Which runner won the race?
a)
A
b)
B
c)
C
85.
The graph represents
a)
No motion
b)
Constant velocity
c)
Acceleration
d)
Deceleration
86.
The graph represents
a)
Acceleration
b)
No motion
c)
Deceleration
d)
Constant Velocity
87.
Which quantity is a vector?
a)
Displacement
b)
Distance
88.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
89.

An airplane accelerates down a runway at 3.20 m/s/s for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.

a)

1720m

b)

104.96m

c)

1270m

d)

2704m

90.

d

a)

distance / displacement

b)

direction

c)

velocity

d)

acceleration

91.

vi

a)

velocity

b)

initial velocity

c)

final velocity

d)

acceleration

92.

vf

a)

velocity

b)

initial velocity

c)

final velocity

d)

acceleration

93.

a

a)

velocity

b)

distance

c)

acceleration

d)

accuracy

94.

acceleration units

a)

m/s

b)

m/s2

c)

m2/s2

d)

m

95.

distance or displacement units

a)

m/s

b)

m/s2

c)

m2/s2

d)

m

96.

time units (that we use in physics)

a)

s

b)

min

c)

hr

d)

year

97.

a tiger travels 96 m in 8s. what is his velocity over the interval

a)

0.04m/s

b)

25m/s

c)

225m/s

d)

12m/s

98.

what is the formula to calculate speed.

a)

S=d/t

b)

S=t/d

c)

S=t x d^2

d)

S=d x t

99.

A car travels 100km. The journey takes two hours. The highest speed of the car is 80km/ h, and the lowest speed is 40km/ h. What is the average speed for the journey?

a)

40km/ h

b)

50km/ h

c)

60km/ h

d)

120km/ h

100.

An object is released from rest and falls to Earth. During its fall, the object is affected by air resistance. The air resistance eventually reaches a constant value. Which description about successive stages of the motion of the object is correct?

a)

constant acceleration, then constant deceleration

b)

constant deceleration, then zero acceleration

c)

decreasing acceleration, then constant deceleration

d)

decreasing acceleration, then zero acceleration

101.

On Earth, a ball is dropped and falls 2.0 m in a vacuum. The acceleration of the ball at 1.0 m is 10 m/s2 .

What is the acceleration of the ball at 0.5 m?

a)

5.0 m / s2

b)

10 m / s2

c)

15 m / s2

d)

20 m / s2

102.

An ice crystal falls vertically from a cloud. What happens to the acceleration of the ice crystal as it falls?

a)

It decreases because of air resistance.

b)

It decreases because of gravity.

c)

It increases because of air resistance.

d)

It increases because of gravity.

103.

An athlete runs at a speed of 8 m / s for 10 s, and then at a speed of 6 m / s for 12s. Which calculation gives the average speed of the athlete in m / s?

a)

8+62\frac{8+6}{2}  

b)

(8×10)+(6×12)22\frac{\left(8\times10\right)+\left(6\times12\right)}{22}  

c)

(8÷×10)+(6÷×12)22\frac{\left(8\div\times10\right)+\left(6\div\times12\right)}{22}   

d)

(10÷×8)+(12÷6)22\frac{\left(10\div\times8\right)+\left(12\div6\right)}{22}  

104.

A boy runs 400 m at an average speed of 4.0 m / s. He runs the first 200 m in 40 s. How long does he take to run the second 200 m?

a)

60 s

b)

66.7 s

c)

80 s

d)

140 s

105.

An object is moving with uniform deceleration. Which statement describes its motion?

a)

Its rate of change of speed is decreasing.

b)

Its speed is constant.

c)

Its speed is decreasing.

d)

Its speed is increasing.

106.

The velocity of an object increases from 30 m / s to 50 m / s in 5.0 seconds.

What is the average acceleration of the object?

a)

0.10 m / s2

b)

0.25 m / s2

c)

4.0 m / s2

d)

10 m / s2

107.

A car travels at an average speed of 60 km / h for 15 minutes. How far does the car travel in 15 minutes?

a)

4.0 km

b)

15 km

c)

240 km

d)

900 km

108.

A student investigates the motion of a ball rolling down a slope. The diagram shows the speed v of the ball at different times t.

Which statement describes the motion of the ball?

a)

The acceleration is not constant.

b)

The acceleration is negative.

c)

The speed is decreasing.

d)

The velocity is constant.

109.

A car is travelling at a velocity of 2.0 m / s. It accelerates at a constant 0.20 m / s2 for 2.5 minutes. What is the final velocity of the car?

a)

2.5 m / s

b)

5.2 m / s

c)

30 m / s

d)

32 m / s

110.

A ball falls from rest through the air towards the ground. The diagram shows two forces acting on the ball.

As the ball falls, the air resistance increases. Which statement is correct?

a)

The acceleration of the ball decreases.

b)

The acceleration of the ball increases.

c)

The speed of the ball decreases.

d)

The gravitational force on the ball decreases.

111.

Which statement about acceleration is correct?

a)

It is the force acting on an object when it is near to the Earth.

b)

It is the distance an object travels in one second.

c)

It is the force acting on an object divided by the distance it travels in one second.

d)

It is related to the changing speed of an object.

112.

A train begins a journey from a station and travels 60 km in a time of 20 minutes. What is the average speed of the train?

a)

3.0 m / s

b)

5.0 m / s

c)

50 m / s

d)

60 m / s

113.

A light object is dropped from rest. It falls a large distance vertically through air. How can the motion of the object be described?

a)

constant acceleration

b)

increasing acceleration

c)

decreasing acceleration and then moving at terminal velocity

d)

increasing acceleration and then moving at terminal velocity

114.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
115.
A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction force is...
a)
The grip of the player's hands on the ball
b)
the air resistance of the ball
c)
the force of the ball against the bat
116.

What is the net force in this diagram?

a)

8N right

b)

2 N right

c)

8N left

d)

2N left

117.

Your car has a mass of 2500 kg and a force of 5000 N. How fast will it accelerate?

a)

20 m/s2

b)

2 m/s2

c)

0.5 m/s2

d)

120 N

118.

What happens when unbalanced forces act on an object at rest?

a)

the object remains at rest

b)

the object begins moving in an unpredictable direction

c)

the object begins moving in the direction of the net force

d)

the object begins moving opposite to the direction of net force

119.

A 20 kg bike accelerates at 10 m/s2. What was the force?

a)

25 Newtons

b)

20 Newtons

c)

200 Newtons

d)

10 Newtons

120.

What is the net force?

a)

40 N left

b)

400 N right

c)

0 N Balanced

d)

40 N right

121.

What Unit do we Measure Force in?

a)

Newtons

b)

Joules

c)

Kilogram

d)

Work

122.

Jenny applies a 60 N force to a 20 Kg cart, what is the acceleration of the cart if friction can be neglected?

a)

1200 m/s/s

b)

0.33 m/s/s

c)

20 m/s/s

d)

3 m/s/s

123.

What is force?

a)

A push exerted on an object

b)

A push or pull exerted on an object

c)

A pull exerted on an object

d)

Nothing

124.

The mass of a wagon is 40 kg. The wagon accelerates at 8 m/s2 . What is the force?

a)

38.25 Kg

b)

320N

c)

5N

d)

3.825Kg

125.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
126.
A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2.  What is the mass of the object?
a)
100kg 
b)
1,250kg
c)
50kg
d)
5kg
127.

If the net force is equal to zero, the forces acting on the object are

a)

balanced

b)

unbalanced

128.

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

a)

False

b)

True

129.

When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

a)

The cannon moving forward

b)

The cannon moving backwards

c)

The cannonball moving backwards

d)

The cannonball moving forward

130.

Action reaction forces never cancel each other out because

a)

They act on different objects.

b)

They act on the same objects

c)

They do not act on objects.

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