A balloon starts rising from the ground, vertically upwards, uniformly at the rate of 1 m s^-1. At the end of 4 seconds, a body is released from the balloon. Calculate the time taken by the released body to reach the ground. ( Take g =10)
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Answer:
1 second
Explanation:
Height of balloon after 4 secs (vt) = 4m
Velocity = 1 m/s
h = ut + gt²÷ 2
4 = (-1)t + 10t² ÷ 2
4=−t+5t2
5t2−t−4=0
(5t+4)(t−1)=0
t=1sec
Therefore answer = 1 sec
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