Question

A body moving with a velocity of 10 m/ s stops after 2s . find the initial and final momentum of the body and the force acting on it . the body weights 5 kg​

Answer 1

Answer:

Explanation:

Mass of the body = 5 kg

Initial velocity (u) = 10 m/s

Final velocity (v) = 0 m/s

Initial momentum = mu = 5 × 10 = 50 kg m/s

Final momentum = mv = 5 × 0 = 0 kg m/s

Force = Rate of change of momentum

Change in momentum = 50 - 0 = 50 kg m/s

Time taken = 2 seconds

Force = 25 N

Hence, the force required is 25 N