Q5 of 48 Page 38

A body is falling freely under the action of gravity alone in vacuum. Which of the following quantities remain constant during the fall?

During free fall,

K.E. increases, momentum increases and P.E. decreases


Total mechanical energy=K.E.+P.E.


As P.E. decreases and K.E. increases ∴ M.E. remains constant.


Option (c) is correct.

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