wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Forces

Total questions: 15

Worksheet time: 17mins

Name
Class
Date
1.

The person in the picture wants the crate to move to the right at 4.0 m/s. A friction force of 9.0 N to the left is acting on the crate as it slides. The person needs to pull to the right with a force of ---.

a)

4.0 N

b)

9.0 N

c)

13.0 N

d)

anything more than 9.0 N

2.

According to the free-body diagram of the engine block being dragged across the floor, this engine block is ---.

a)

moving to the right

b)

not moving

c)

accelerating to the right

d)

cannot say without more information

3.

What is happening to the rocket in the picture?

a)

It is being accelerated down

b)

It is moving down

c)

It is moving up

d)

It is being accelerated up

4.

Select ALL of the items below which could be represented by the arrow shown above for a car moving in a circular path as seen from above.

a)

centripetal force

b)

linear velocity (a.k.a. tangential velocity)

c)

angular velocity

d)

centripetal acceleration

5.

A car with mass m travels around a curve with velocity v. What do you know about the centripetal force if the speed triples?

a)

Nothing

b)

The centripetal force triples

c)

the centripetal force multiplies by 9

d)

The centripetal force divides by 3

6.

A dolphin swims in a circle with a radius of 30 m and moves with a speed of 3.2 m/s. What is the dolphin’s centripetal acceleration?

a)

0.341 m/s²

b)

0.106 m/s²

c)

96 m/s²

d)

307.2 m/s²

7.

A carnival ride is being designed to move a ride vehicle in a circle at a particular speed. If the design is changed so that the radius is one-third as big, and the speed is one-half as much, the new acceleration will be --- times the original design acceleration.

a)

3/2

b)

2/3

c)

3/4

d)

4/3

8.

The direction of the net force on an object moving in a circular path is ---.

a)

outward, because that's the direction it feels like it's being pulled

b)

forward, because that's the direction of the velocity

c)

inward, because that's which way it gets pulled to keep it from flying off in a tangent line path

d)

forward, because that's the direction of the acceleration

9.

Two massive bodies are pulling on each other with gravity with a force of 12.0 µN. If one object is replaced with another object six times as massive, and the distance is changed to four times the original distance, the new force will be ---.

a)

4.5 µN

b)

18.0 µN

c)

288 µN

d)

0.375 µN

10.

Two objects are attracted to each other with 36 N of gravitational force.

What would the force between them be if the distance between them were doubled?

a)

9 N

b)

18 N

c)

72 N

d)

144 N

11.

In which direction is the net force when the rollercoaster is at the top of the loop?

a)

Towards the sky

b)

Towards the right

c)

Towards the left

d)

Towards the ground

12.

A car making a corner is pulling 2 g's (i.e. an acceleration of 2×9.8 m/s², for a total acceleration of 19.6 m/s²). If the car is moving at a speed of 28 m/s, the curve has a radius of ---.

a)

2.9 m

b)

1.4 m

c)

40 m

d)

104 m

13.

A bowling ball is moving in a vertical circle, about to be sent down the bowling lane, as shown in the diagram. Which of the following depict the velocity of the bowling ball?

a)

A

b)

B

c)

C

d)

D

14.
Which of the following is the unit for centripetal force?
a)
J
b)
m/s2
c)
kg⋅m/s
d)
N
15.

The forces between the masses in the original picture above is 22.5 nN. If the mass on the right is replaced with something four times as massive, and they are rearranged so they are three times farther apart, the force is now ---.

a)

10.0 nN

b)

30.0 nN

c)

50.6 nN

d)

90 nN