Question

the momentum of a body increase from 150kg-m/s to 600 kg-m/s in 2 minutes . calculate applied force on a body.

Answer 1

this is your answer

Answer 2

Initial Momentum , p1 = 150 kg - m/s
Final Momentum , p2 = 600 kg - m/s

Change in momentum
= Final Momentum - Initial Momentum
= p2 - p1
= 600 - 150
= 450

Time during this change in momentum
= 2 minutes = 2 × 60 sec = 120 s

Applied Force
F = Change in momentum / time taken
= 450 / 120 = 45 / 12 = 15 / 4 = 3.75 N ( Newton )