A stone is thrown vertically upwards. It reaches a maximum height in 3s. If the acceleration due to gravity be 9.8 m s2, calculate the initial velocity of the stone.
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Initial velocity of the stone, u = ?
Final velocity of stone, v = 0
Acceleration due to gravity, g=−9.8m/s
2
Time, t = 3 sec
Using relation, v = u + gt
0=u−9.8×3
u = 29.4 m/s
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