Question

a girl of mass 40 kg runs with a velocity, 2m/s to board a small trolley of mass 20 kg, initially at rest. what is the initial momentum of the girl.

Answer 1

Initial Velocity = 2m/s

Mass = 40kg

We know that, Momentum (P) = mv

Thus,

Initial Momentum (Pi) = Mass×Velocity(initial)

=> Pi = 40kg × 2m/s

=> Pi = 80Kg.m/s

Hence, Initial Momentum = 80kg.m/s