Question 5 of 10
Two billiard balls, each with a mass of 0.21 kg, collide with each other on a
pool table. Before the collision, one ball is moving north at 1.7 m/s and the
other ball is moving south at 2.6 m/s. What is the momentum of this system
after the collision?
A. 0.19 kg-m/s south
B. 0.19 kg-m/s north
O C. 0.90 kg-m/s north
D. 0.90 kg-m/s south