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WorksheetsProjectiles and Circular Motion
Total questions: 65
Worksheet time: 2hrs 1mins
Name
Class
Date
1.
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
direction
2.
In practice A of the figure, What is the magnitude of the resultant displacement?
a)
5 km
b)
8 km
c)
11 km
d)
15 km
3.
In practice B of the figure, which displacement is the horizontal component?
a)
30 km, East
b)
30 km, West
c)
40 km, North
d)
40 km, South
4.
Is this a scalar quantity or a vector quantity?
A deer running 15 meters per second due west
A deer running 15 meters per second due west
a)
Scalar
b)
Vector
5.
If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?
a)
20m
b)
40m
c)
0m
d)
-20m
6.
If a car moves 12 km North, 19 km East, and 12 km South, what is its displacement?
a)
12 km
b)
19 km, East
c)
31 km
d)
43 km, East
7.
Which of the following quantities are vectors?
a)
speed, velocity, acceleration
b)
velocity, acceleration, force
c)
force, acceleration, mass
d)
length, mass, time
8.
The _______ of two or more vectors is the sum of the vectors.
a)
components
b)
scalar
c)
resultant
d)
magnitude
9.
What is the net force?
100 N 230 N
<------ --------->
100 N 230 N
<------ --------->
a)
30 N to the right
b)
230 N to the right
c)
130 N to the right
d)
This is a balanced force
10.
What is the x component of the vector given in the diagram?
a)
77N
b)
92N
c)
120N
d)
60N
11.
What is the y component of the vector given in the diagram?
a)
77N
b)
92N
c)
120N
d)
60N
12.
What is the length of side AB?
a)
A
b)
B
c)
C
d)
D
13.
A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always
a)
in the direction of motion
b)
opposite its velocity
c)
directed downward
d)
directed upward
14.
The horizontal component of a projectile's velocity is:
a)
constant
b)
a constant acceleration
c)
always -9.8 m/s2 down
15.
When a projectile is at the highest point of its path, the vertical velocity is:
a)
Constant
b)
Always -9.8 m/s2
c)
Zero
16.
Which component of velocity is changing for a projectile?
a)
The x component
b)
The y component
c)
Both change
d)
Neither change
17.
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
18.
A person begins a corn maze by walking 6.00m to the East and 10.0m to the North. How far away is the person from the starting position?
a)
10.4 m
b)
11.7 m
c)
16.0 m
d)
16.8 m
19.
An object is shot directly upward from the ground. T1 represents the time it takes to reach the maximum height. T2 represents the time it takes to travel from the maximum height to the ground.
a)
T1 = T2
b)
T1 < T2
c)
T1 > T2
d)
unable to determine
20.
What is the x component of the vector in the diagram?
a)
-42N
b)
42N
c)
38N
d)
-30N
21.
What is the y component of the vector in the diagram?
a)
-42N
b)
42N
c)
38N
d)
-30N
22.
What is the x component of the vector in the diagram?
a)
104N
b)
-60N
c)
60N
d)
95N
23.
What is the y component of the vector in the diagram?
a)
104N
b)
-60N
c)
60N
d)
95N
24.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
-9.8 m/s2
25.
What is the vertical acceleration of a projectile?
a)
0 m/s2
b)
-9.8 m/s2
26.
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
27.
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
28.
Which angle will produce the greatest range (in the absence of air resistance)?
a)
0 degrees
b)
45 degrees
c)
90 degrees
d)
none of these
29.
The vertical velocity of a projectile is unaffected by the horizontal velocity; these two components of motion are independent of each other.
a)
True
b)
False
30.
A ball is thrown into the air at some angle. At the very top of the ball's path, its velocity is
a)
entirely vertical
b)
both vertical and horizontal
c)
entirely horizontal
d)
not enough info
31.
A ball is projected horizontally with velocity 10 m/s from a point 245 m above the ground. How long does it take to reach the ground?
a)
7.07 s
b)
12.56 s
c)
37.00 s
d)
49.50s
32.
A car traveling at 15 m/s on a flat surface turns in a circle with a radius of 25 m. What is the centripetal acceleration of the car?
a)
2.4 x 10-2 m/s2
b)
0.60 m/s2
c)
9.0 m/s2
d)
zero
33.
Which of the following terms means "center seeking"?
a)
centrifugal
b)
centrifuge
c)
centripetal
d)
centenarian
34.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
35.
What happens to the centripetal force exerted on an object if you triple the velocity?
a)
it increases to 3X
b)
it decreases to 6X
c)
it increases to 6X
d)
it increases to 9X
36.
Centripetal acceleration always points
a)
in the direction of the object's motion
b)
in the opposite direction of the object's motion
c)
towards the center of the circle
d)
towards the outside of the circle
37.
Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?
a)
0.25 ms-2
b)
0.5 ms-2
c)
1 ms-2
d)
2 ms-2
38.
What is the force that causes centripetal acceleration when a car goes around a curve?
a)
Friction
b)
Gravity
c)
Normal
d)
Tension
39.
If the gravitational force between the Earth and the Sun were suddenly switched off, the path of the Earth would be
a)
toward the sun.
b)
away from the sun.
c)
a straight line in the direction it was moving.
d)
a spiral out and away from the sun.
40.
A car travels with a constant speed in a circle. The net force on the car is
a)
zero.
b)
directed forward.
c)
directed toward the center.
d)
directed outward, away from the center.
41.
A 0.5kg ball is whirled in a horizontal circle with radius 0.5m and a speed of 1m/s. Calculate the Centripetal Force on the ball.
a)
0.5N
b)
1.0N
c)
2.0N
d)
2.5N
42.
A ball is kicked at an angle of 30 degrees with an initial velocity of 10m/s.
Find the x- component of the speed.
Find the x- component of the speed.
a)
8.7m/s
b)
5.0 m/s
c)
10 m/s
d)
1.5 m/s
43.
In practice A of the figure, what is the direction of the resultant displacement?
a)
63 degrees, South of East
b)
63 degrees, North of West
c)
27 degrees, North of West
d)
27 degrees, South of West
44.
A ball is shot horizontally from the edge of a table. Which of the following statements concerning the fall of the ball is false?
a)
The time of flight depends ONLY on the height of the table
b)
The ball will accelerate
c)
The force of gravity acts on the ball
d)
They're all true.
45.
A boy standing on top of a hill throws a stone horizontally. The stone hits the ground at the foot of the hill 2.5 s later. How high is the hill?
a)
42.50 m
b)
31.25m
c)
10.62m
46.
A ball is projected horizontally with velocity ‘v’ m/s from a point 245 m above the ground.I f it strikes the ground 84 m horizontally from the point of projection, what is the value of v?
a)
12 m/s
b)
48m/s
c)
58m/v
d)
68m/s
47.
A horse gallops around a circular arena. The centripetal acceleration on the horse is ___.
a)
directed outward
b)
tension
c)
directed toward the center of the arena
d)
9.8 N
48.
A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s2, what is the car's tangential speed?
a)
19.7 m/s
b)
5.99 m/s
c)
0.17 m/s
d)
388.01 m/s
49.
A ball is kicked at an angle of 30 degrees with an initial velocity of 10m/s.
How long is it in the air? Use 10 m/s2 for g.
How long is it in the air? Use 10 m/s2 for g.
a)
0.5s
b)
0.87s
c)
1 s
d)
5 s
50.
A ball is kicked at an angle of 30 degrees with an initial velocity of 10m/s.
What maximum height does it reach? Use 10 m/s2 for g.
What maximum height does it reach? Use 10 m/s2 for g.
a)
1.25m
b)
5m
c)
8.7m
d)
14.7m
51.
A ball is kicked at an angle of 30 degrees with an initial velocity of 10m/s.
What is the horizontal range? Use 10m/s2 for g.
What is the horizontal range? Use 10m/s2 for g.
a)
1m
b)
5m
c)
8.6m
d)
10m
52.
A car travels 90 meters due north. Then the car turns around and travels 40 meters due south. What is the magnitude and direction of the car's resultant displacement?
a)
40 metres, South
b)
50 metres, South
c)
50 metres, North
d)
40 metres, North
53.
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?
a)
A
b)
B
c)
Both objects reach the maximum height
d)
unable to determine with the given information
54.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
55.
Objects balanced on Timmy's head experiences-
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
56.
Sally experiences-
a)
Rolling Friction
b)
Kinetic Friction
c)
Fluid Friction
d)
Static Friction
57.
Which type of friction occurs when objects are not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
58.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
59.
When two surfaces rub, the irregularities of one surface get caught on those of the other surface?
a)
True
b)
False
60.
What are 2 factors that determine the amount of friction between 2 objects?
a)
Force and roughness between surfaces
b)
hills and valleys and how smooth or rough the surface is
c)
Amount of force and amount of surface the comes in contact
d)
The force and the weight exerted on the surfaces
61.
What is the force of friction between a
block of ice that weighs 950 N and the ground if μ = .12?
a)
65 N
b)
226 N
c)
175 N
d)
114 N
62.
What
is the coefficient of static friction if it takes 44 N of force to move a
box that weighs 86 N?
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
63.
A
box takes 40 N to start moving when the coefficient of static friction is
.54. What is the weight of the box?
a)
81 N
b)
18 N
c)
98 N
d)
74 N
64.
Clarice
moves a 800. gram set of weights by applying a force of 1.3 N. What is the
coefficient of friction?
a)
4.5 N
b)
10.2N
c)
59 N
d)
5.3 N
65.
A
car has a mass of 2020 Kg and has a coefficient of friction between the
ground and its tires of .75. What force of friction can it exert on the
ground?
a)
15000 N
b)
7000 N
c)
4500 N
d)
8500 N
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