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A piece of stone is thrown vertically up...

A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If the acceleration of the stone be `9 .8 m//s^(2)` directed towards the ground, calculate the initial velocity of the stone with which it apply Newton's third law to the gravitational force? explain your answer. on the distance between them. on the surface of the earth? is thrown upwards.

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The correct Answer is:
29.4 m/s
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