A body is released from the top of a tower of height h. It takes t sec to reach the ground. Where will be the ball after time t2 s.
Let the body after time t2 fall a distance x from the top. Since it starts from rest, we have
x=12gt24=gt28 .............(i)
It reaches the ground in t seconds, we have
h=12gt2 ..............(ii)
Eliminate t from (i) and (ii), we get x = h4
∴ Height of the body from the ground
= h−h4=3h4
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