Question

a boy throws a ball vertically upward and catches it back in 10 seconds calculate the velocity with which it was thrown up and maximum height attained by the ball...

Answer 1

Catches back in 10 Sec so max height achieved in 5 sec

v = u +at

v = 0 at max height

a = -g = -9.8 (as direction upward)

0 = u + (-9.8)5

u = 49 m/s

Answer 2

Answer:

refer the attachment for a clear and better understanding .