11.

What is the difference in momentum between a 58 kg athlete

running 2.5m/s and a 1500kg truck traveling 2m/s? just compare their momentum
12.
A net force of 15 newtons acts on a 5kg mass for 10 seconds.

What is the magnitude of the change in the objects momentum.
13.
A 2.0-kg lab cart moving with a velocity .75m/s due east

collides with and sticks to a similar cart at rest. After the collision,

the two carts move off together with a velocity of .25m/s due east.

Which is true about the total momentum of the this system

A. It is zero before

B. It is greater before the collision than after

C. It is zero after

D. It is the same before and after the collision