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Question

During freefall, we can use equations of motion. This is because ____ is constant.

A
speed
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B
velocity
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C
acceleration
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D
mass
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Solution

The correct option is C acceleration
Free fall is defined as the motion of an object when gravity is the only force acting upon it.
Equations of motions are valid only for 1 dimensional motion and uniformly accelerated motion. Both of these conditions are satisfied by the object falling freely.
Hence,
During freefall, we can use equations of motion as acceleration is constant.

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