Question

A boy throws a ball straight up into the air. It reaches the highest point of its flight after 4 seconds.
How fast was the ball going when it left the boy’s hand?

Answer 1

Explanation:

here is the ans... using first equation of motion

Answer 2

Answer:

v=u-gt

0=u-gt

u=gt=9.8x4=32.9m/s²

Explanation: