A ball is dropped from a height of 49m. Find the time interval in which ball hits the ground.
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height of ball= 49m
u = 0
g = 9.8 m/s^2
t = ?
h = ut + 0.5gt^2
49 = 0 + 0.5×9.8×t^2
49= 4.9 t^2
t^2 = 49/4.9= 10
t = root 10 = 3.16 s
So it will take 3.16 second to reach ground
u = 0
g = 9.8 m/s^2
t = ?
h = ut + 0.5gt^2
49 = 0 + 0.5×9.8×t^2
49= 4.9 t^2
t^2 = 49/4.9= 10
t = root 10 = 3.16 s
So it will take 3.16 second to reach ground
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