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Question

Assuming that there is no air resistance, what is the acceleration produced in a body of mass 25 kg falling freely from a height of 2m?

A
12.5m/s2
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B
50m/s2
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C
9.8m/s2
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D
19.6m/s2
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Solution

The correct option is B 9.8m/s2
Answer is C.
Acceleration is constant and equal to g = 9.8m/s2.
Force causes acceleration, and force comes from a field (gravitational field, magnetic field) or contact - like a push. The only force acting on the freely falling body is its weight due to the earth's gravitational field. The gravitational force, which is, mass times gravitational acceleration = mg.

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