AnswersTX-Integrated Physics and Chemistry B-CRUnit Test

Unit Test — Unit test Answers

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A ball is thrown forward at 5 m/s.

A
The ball would follow a curved path on Earth but a straight path on the moon.
B
The ball would follow the same curved path on Earth as on the moon.
C
The ball would curve down more sharply on Earth than on the moon.
D
The ball would curve down on Earth but curve up on the moon.
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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
23

A car has a momentum of 20,000 kg • m/s. What would the car’s momentum be if its velocity doubles?

A
10,000 kg • m/s
B
20,000 kg • m/s
C
40,000 kg • m/s
D
80,000 kg • m/s
24

Polly is pushing a box to the right across the floor with a force of 30 N. The force of gravity is 8 N, and the normal force is 8 N. Which value could describe the force of friction if Polly could not move the box?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
25

Why are objects that fall near Earth’s surface rarely in free fall?

A
Gravity does not act on objects near Earth’s surface.
B
Air exerts forces on falling objects near Earth’s surface.
C
The objects do not reach terminal velocity.
D
The objects can be pushed upward by gravity.

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