Quiz about SPS8b. Newton's Laws of Motion Review

Question 1

Slamming on the brakes in a moving car makes a passenger move forward against his or her seat belt because

Accepted Answer

the passenger has the inertia to keep moving forward

Answer

the passenger is being pushed by the seats of the car

Answer

the passenger is better able to stop themselves in this manner

Answer

the passenger has an equal and opposite force supporting their weight

Question 2

For every _______ there is an equal and opposite ________.

Accepted Answer

action, reaction

Answer

reaction, action

Answer

action, action

Answer

reaction, reaction

Question 3

Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?

Accepted Answer

The mass of the bowling balls is greater than the mass of the basketballs

Answer

The mass of the car is greater than the mass of the basketballs

Answer

The van with the basketballs is bigger than the van with the bowling balls

Answer

It should be equally as hard to push the two vans

Question 4

Which of these is an example of Newton's Second Law, F=ma

Accepted Answer

a tug of war where both sides pull equally, and the rope doesn't move

Answer

a wide receiver using his hands to stop and catch a football thrown by the quarterback

Answer

a car traveling on a straight part of the highway with a cruise control set at constant velocity

Answer

a book pushing down on the desk where it is resting

Question 5

A 260.5N unbalanced force applied to push a chair across the room causing an acceleration of 4.2 m/s². What is the mass of the chair?

Accepted Answer

62.02 kg

Answer

63.69 kg

Answer

263.3 kg

Answer

1123.5 kg

Question 6

A cannonball with a mass of 0.5 kg is flying at an acceleration of 10 m/sec/sec. What is it's force?

Accepted Answer

5 Newtons

Answer

50 Newtons

Answer

20 Newtons

Answer

9.5 Newtons

Question 7

What is the net force for this situation?

Accepted Answer

3 N Right

Answer

17 N Right

Answer

17 N Left

Answer

3 N Left

Question 8

The acceleration of a 4 kg bowling ball will be greater than the acceleration of a 6 kg bowling ball if the same force is applied to both.

Accepted Answer

Newton's
2nd
Law of Motion

Answer

Newton's
1st
Law of Motion

Answer

Newton's
3rd
Law of Motion

Question 9

A magician pulls a table cloth from under a table of dishes.

Accepted Answer

Newton's
1st
Law of Motion

Answer

Newton's
2nd
Law of Motion

Answer

Newton's
3rd
Law of Motion

Question 10

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?

Accepted Answer

For every action there is an equal and opposite reaction.

Answer

Every mass exerts a force on every other mass.

Answer

An object at rest tends to stay at rest.

Answer

Friction opposes the motion of an object.

Question 11

If these boys are pulling with the same amount of force.  What will happen?

Accepted Answer

They will not move at all.

Answer

The boy in blue will win.

Answer

The boy in red will win.

Answer

Both will fall down.

Question 12

Why is it harder for the boy in Image B to get down the hill?

Accepted Answer

Friction

Answer

Motion

Answer

Work

Answer

Displacement

Question 13

It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes

Accepted Answer

Newton's second law, the law of acceleration

Answer

Newton's first law, the law of inertia

Answer

Newton's third law, the law of action reaction

Answer

The law of universal gravitation

Question 14

If an object is stationary (not moving) the forces acting upon it are _____________

Accepted Answer

balanced

Answer

unbalanced

Answer

weak

Question 15

You push off and the boat moves the opposite direction. This is Newtons ____ law.

Accepted Answer

3rd

Answer

1st

Answer

2nd

Question 16

Which example best explains Newton's Third Law of Motion?

Accepted Answer

When you sit on a chair, your body exerts a downward force on the surface of the chair, while the chair exerts an equal and upward force on your body.

Answer

When a glass slid across a table, it spilled water when it stopped suddenly.

Answer

An engine used less work to move a lighter car than when it moved a heavier car.

Question 17

Object X has twice the mass of Object Y.  Both objects are accelerating at the same rate.  Which statement best describes the motions of Object X and Object Y.

Accepted Answer

Object X requires twice the force to accelerate at the same rate as Object Y.

Answer

Object X is travelling at twice the speed as Object Y.

Answer

Object X is travelling at half the speed as Object Y.

Answer

Object X requires half the force to accelerate at the same rate as Object Y.

Question 18

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?

Accepted Answer

For every action there is an equal and opposite reaction.

Answer

Every mass exerts a force on every other mass.

Answer

An object at rest tends to stay at rest.

Answer

Friction opposes the motion of an object.

SPS8b. Newton's Laws of Motion Review

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