Question

a net force of 200 newton's is applied to a wagon for 3 seconds. this causes the wagon to undergo a change in momentum of

Answer 1

From Newton's Derivation:

Change in Momentum = Force * time
m(v - u) = F* t
Momentum Change = 200 N * 3 seconds
= 600 Ns or 600 Kg.m/s.

Answer 2

If there's no friction and the wagon is free to move, then its momentum changes by 600 kg-meters per second.