A ball is dropped from a balloon going up at a speed of 7 metre per second. if the ball was at a height 60 M at the time of dropping the ball, how long will the Ball taken in reaching the ground?
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A ball is dropped from a balloon going up at a speed of 7 metre per second. if the ball was at a height 60 M at the time of dropping the ball, how long will the Ball taken in reaching the ground?
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here u=0m/s
v=?
g=10m/s^2
t=?
s=60m
s=ut+(at^2)/2
60=(0*t)+(10t^2)/2
60=(10t^2)/2
120=10t^2
12=t^2
so t = √12 = 3.46 sec