Physics

Problem

0.50\,\text{kg}

cart moves at

3.0\,\text{m/s}

on a straight, frictionless track and collides with a

1.5\,\text{kg}

cart that is initially at rest. The two carts stick together after the collision. What is their common speed immediately after they collide? a)

1.5\,\text{m/s}

0.38\,\text{m/s}

0.75\,\text{m/s}

2.3\,\text{m/s}