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Grade 8 - Free Fall

Authored by Mary Apacible

Physics

8th Grade

Grade 8 - Free Fall
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The state that exists when the only force acting on an object is gravity is called

free fall

inertia

acceleration

momentum

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The acceleration due to gravity near the surface of Earth is equal to

9.8 m/s

9.8 kg x m/s

9.8 N

9.8 m/s2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?

They don't; they hit the ground at the same time.
One is more dense than the other.
One is heavier than the other.
Air resistance 

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?

the velocity increases

the velocity decreases

the velocity remains constant

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Heavier objects free fall faster than lighter objects in a vacuum found in outer space or on the moon.

True

False

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

the feather
the metal bolt
They would hit the ground at the same time.
They would be suspended in a vacuum.

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which would fall with greater acceleration in a vacuum—a leaf or a stone?

the leaf
the stone
They would accelerate at the same rate.
It is difficult to determine without more information.

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