A man throws a ball weighing 500 g vertically upwards with a speed of 10 m/s.
(i) What will be its initial momentum?
(ii) What would be its momentum at the highest point of its flight?
(i) The momentum, p = mv.
The values of mass and velocity are given as
Mass, m =500g = 0.5 kg
Initial velocity, u = 10 m / s
Initial Momentum = mu
= 0.5 ×10 = 5 kg m/s
(ii) At the highest point, the velocity of the ball will be zero. So, its momentum is zero.