Question

Calculate the change in momentum of a body weighing 8 kg when its velocity decreases from 50 m/s to 20 m/s

Answer 1

Explanation:

mass, m = 5 kg

velocity, v2 = 0.20 m/s

Therefore, momentum of a body moving with velocity v1, p2 = m × v1

= 5 × 0.20 = 1 kg.m/s

Change in the momentum of a body = p1 − p2

= 100 − 1

= 99 kg.m/s

Answer 2

MOMENTUM is 240kgm/s

moment is products of mass and velocity

P=mv

p is momentum , m is mass , v is velocity

P1 is initially momentum

P2 is final momentum

to find change in momentum simply subtract final momentum from initial momentum