Question

A man throws a ball weighing 500 grams vertically upward with a speed of 10 metre per second what would be its

Answer 1

Intial momentum= Mass*Velocity=0.5*10 =5 kg.m/s

Momentum at highest point would be zero as the velocity as highest point would be zero! 

hope this helps!

Answer 2

weight = 500g

∵ w = m×g

⇒ 500 = m×9.8

⇒ m = 51.02g

time = d/s

time = 500/10

time = 50s

speed (v) = 10m/s