A ball is thrown vertically upward with initial velocity 100m/s. After how much time will it return
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Total time of flight =2u/g
2×100/10 =200/10 =20 sec
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Answer:
Displacement =0
Initial speed=100m/s
Acceleration =-10m/s2
From
S=ut +1/2at2
0 = 100t + 1/2(-10)t2
0 =100t - 5t2
0 = 5t(20 - t)
So,
t = 0, 20s
So it will take 20s to reach the ground
Explanation:
hope this helps you.
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