Home Physics Motion in a Straight Line Relative Motion An elevator is descending at a constant spee…
Physics Motion in a Straight Line Relative Motion MCQ (Single Correct)

An elevator is descending at a constant speed. A passenger drops a coin on the floor. What will be the acceleration of coin as seen by

A
a person standing on ground and
B
a person at rest with respect to the elevator, shall observe for the falling coin.

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The correct answer is:
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9.8 m/s 2 downward in both cases.

Sol. a r = a 2 – a 1 = 9.8 – 0 = 9.8 m/s 2

a r = 9.8 – 0 = 9.8 m/s 2

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