AnswersFall 24 GSE Physical Science B ICNewton's Laws of Motion

Newton's Laws of Motion Answers

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A cart accelerates at 2 m/s2 when a force of 60 N is applied. What is the mass of the cart? (Formula: F=ma)

A
0.03 kg
B
30 kg
C
62 kg
D
120 kg
2
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A force of 5 N accelerates an object. The object’s mass is 50 g. What is the acceleration of the object? (Formula: F=ma)

A
0.01 m/s2
B
0.1 m/s2
C
10 m/s2
D
100 m/s2
3

According to Newton’s second law of motion, what is force equal to?

A
acceleration divided by mass
B
mass times acceleration
C
mass divided by acceleration
D
inertia times acceleration
4

Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth?

A
Rahul’s weight
B
Rahul's mass
C
the sum of the weights of Rahul and the book
D
the sum of the weights of the chair, Rahul, and the book
5

How do Newton’s laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible?

A
Smooth ice reduces the inertia of the hockey puck.
B
Smooth ice increases the force used to accelerate the hockey puck.
C
Smooth ice reduces the unbalanced forces that would slow the hockey puck.
D
Smooth ice decreases the reaction force that the ice exerts on the hockey puck.
6

According to Newton’s first law of motion, when will an object at rest begin to move?

A
when its inertia decreases to zero
B
when an unbalanced force acts upon it
C
when the action and reaction forces are equal
D
when two equal and opposite forces act upon it
7

Two people push on the same door from opposite sides as shown.

Question illustration
A
both people exert the same force so that the forces are unbalanced.
B
neither person exerts a force on the door so that the net force is zero.
C
one person exerts more force than the other so that the forces are unbalanced.
D
both people exert the same force so that the forces are balanced.
8

Laura sees a horse pulling a buggy.Which statement best describes the forces acting on the horse and buggy?

A
The net forces exerted on the horse and cart are the same, but the action force is larger.
B
The net forces exerted on the horse and cart are the same, but they are in the same direction.
C
The net forces exerted on the horse and cart are not the same, so the two forces cancel out.
D
The net forces exerted on the horse and cart are not the same, so they are not balanced forces.
9

Action and reaction forces are described by which of Newton’s laws of motion?

A
first
B
second
C
third
D
fourth
10

Ana exerts a force of 20 N on a volleyball that has a mass of 0.15 kg. What is the force that the volleyball exerts on Ana?

A
0.15 N
B
20 N
C
19.85 N
D
20.15 N

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