2) A 2.0-kg cart moving due east at 6.0 m/s collides with a 3.0-kg cart moving due west. The
carts stick together and come to rest after the collision. What was the initial speed of the 3.0-kg
cart?
1) 9.0 m/s
2) 1.0 m/s
3) 6.0 m/s
4) 4.0 m/s