g = -9.8 m/s^2
So, if it loses 9.8 m/s every second, it had to start out at 3*9.8 m/s to drop to zero in 3 seconds.
algebraically,
v(t) = vi - 9.8t
so, vi-9.8*3 = 0
vi = 3*9.8
a cricket ball is takes 3 sec to reach the maximum height its initial velocity is???
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