Physics

Problem

2.0\,\text{kg}

cart moving to the right collides and sticks to a stationary

1.0\,\text{kg}

cart on a frictionless track. The combined carts move to the right at

1.2\,\text{m/s}

immediately after the collision. What was the speed of the

2.0\,\text{kg}

cart just before impact? a)

1.5\,\text{m/s}

3.6\,\text{m/s}

1.8\,\text{m/s}

1.2\,\text{m/s}