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Theoretical Verification of Law of Conservation

A heavy stone...

Question

A heavy stone is thrown from a cliff of height $h$ with a speed $v$ . The stone will hit the ground with maximum speed if it is thrown:

A

Vertically downward

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B

Vertically upward

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C

Horizontally

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D

The speed does not depend on the initial direction

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Solution

The correct option is D The speed does not depend on the initial direction
Total energy as it reaches the ground will remain constant Irrespective of the direction of launch. The total Energy will be in the form of KE, So the speed will be same in both cases. The velocity may differ due to direction.

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