Question

two balls A and B of masses 'm' and '2m' are in motion with velocities '2v' and 'v' respectively. Compare-
a) their interia
b) their momentum
c) force needed to stop them in the same time

Answer 1

As inertia depends on mass, 2m will have greater inertia.
Momentum is Mv, therefore momentum will be same for both.
Force is rate change of momentum and will be same for both due to their equal momentum.

Hope you get your answer.