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Forces, Momentum, and Friction

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

You are traveling in a car in a straight line. The driver puts on the brakes and you keep moving forward due to inertia. Which of Newton's Laws does this demonstrate?

a)

1st

b)

2nd

c)

3rd

2.

You kick a basketball and a tennis ball away from you with an equal amount of force. The tennis ball has less mass and therefore a greater acceleration. Which of Newton's Laws does this demonstrate?

a)

1st

b)

2nd

c)

3rd

3.

You push your feet against the pool wall and kick off. The backward push propels you forward through the water. Which of Newton's Laws does this demonstrate?

a)

1st

b)

2nd

c)

3rd

4.

Which of Newton's laws deals with force, mass, and acceleration?

a)

1st

b)

2nd

c)

3rd

5.

Which of Newton's laws is also called the Law of Inertia?

a)

1st

b)

2nd

c)

3rd

6.

Which of Newton's laws states that for every action, there is an equal and opposite reaction?

a)

1st

b)

2nd

c)

3rd

7.

Which of Newton's Laws states that an object in motion will stay in motion and an object at rest will stay at rest unless acted on by an external force?

a)

1st

b)

2nd

c)

3rd

8.

Which of Newton's Laws uses the formula F=ma?

a)

1st

b)

2nd

c)

3rd

9.

Which Newton's Law says if object A exerts a force on object B, then object B exerts the same force on object A? (Also known as the action/reaction law)

a)

1st

b)

2nd

c)

3rd

10.

Using the F=ma formula, find the FORCE if an object has a mass of 10 kg and an acceleration of 20 m/s/s.

a)

200 Newtons

b)

2 Newtons

c)

30 Newtons

d)

0.5 Newtons

11.

Which force always works in the opposite direction to motion?

a)

Frictional force

b)

Gravitational force

c)

Electric force

d)

Magnetic force

12.

Using the p=mv formula, calculate the MOMENTUM of a 5 kg bird flying south at 20 m/s.

a)

100 kg⋅m/s

b)

25 kg⋅m/s

c)

0.25 kg⋅m/s

d)

4 kg⋅m/s

13.

_________ is the tendency of an object to resist a change in motion.

a)

Inertia

b)

Force

c)

Momentum

d)

Gravity

14.

What is the unit for force?

a)

Newtons

b)

kg⋅m/s

c)

m/s/s

d)

kg

15.

___________ are two forces acting in opposite directions on an object, and equal in size. Choose the best answer.

a)

Balanced Forces

b)

Unbalanced Forces

c)

Cancelled Forces

d)

Same Forces

16.

_________ are forces that produce a nonzero net force, which changes an object's motion. Choose the best answer.

a)

Balanced Forces

b)

Unbalanced Forces

c)

Same Forces

d)

Equal Forces

17.

What is the formula for momentum?

a)

p=mv

b)

m=mv

c)

p=m/v

d)

m=p/v

18.

What is the unit for momentum?

a)

kg·m/s

b)

Newtons

c)

m/s/s

d)

kg

19.

Calculate the momentum of a 5 kg bowling ball moving at 11 m/s down the alley. (p=mv)

a)

55 kg⋅m/s

b)

16 kg⋅m/s

c)

0.45 kg⋅m/s

d)

2.2 kg⋅m/s

20.

It requires less force to pull a suitcase that is empty than one that is completely full. Which of Newton's Laws does this demonstrate?

a)

1st

b)

2nd

c)

3rd