Question

A man throws a ball weighing 500 g vertically upwards with a speed of 10

m s-1

(i) Find its initial momentum​
(ii) Find its momentum at the highest point of its flight.

Answer 1

Concept :

• Momentum is simply product of mass and velocity of the object. Mathematically,

p = mv

Where,

• p is denoted for Momentum
• m is the mass of object
• v is velocity of object

On moving ahead to our question we come to know that,

1. Mass = 500g = 0.5 kg
2. Velocity = 10 m/s

(i) Initial momentum :

➝ p = mv

➝ p = 0.5 * 10 = 50 kg m/s

____________________________

(ii) Momentum at highest point :

Velocity at the highest point is 0 m/s

➝ p = mv

➝ p = 0.5 * 0 = 0 kg m/s