Question

Q. A stone is released from a height from the top of the tower of height 19.6 meters calculate its final velocity

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Answer 1

Answer:

Initial Velocity u=0

Fianl velocity v=?

Height, s=19.6m

By third equation of motion

v2=u2+2gs

v2=0+2×9.8×19.6

v2=384.16

⇒v=19.6m/s

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Answer 2

Explanation:

Calculate its final velocity just before touching the ground. Thus the velocity of stone just before hitting the ground will be 19.6 metres per second .

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