a stone of mass 4kg is released from a tower of height 120m fall freely to the ground find out time taken by stone to reach the ground(assume value of g=10m/s square) hint given below:
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S=ut+1/2at^2
120=0×t+1/2×10×t^2
120=5t^2
24=t^2
Ans, t=2√6
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