Question

a cricket ball is hit so hard that it travels straight up in air and it requires 3 seconds to reach the maximum height its intial velocity is
a) 10 m/s
b) 15m/s
c) 29.4m/s
d) 12.2m/s​

Answer 1

Explanation:

Velocity at maximum height should be zero.

acceleration is acceleration due to gravity and it is taken negative as it is acting downward.