11. Momentum & Impulse

A 1500 kg truck moving $27\text{m/s}$ slams into a stationary 300 kg car. The two stick together. How fast are they moving immediately after the collision?

A 200 g blob of clay is moving in the positive y-direction at $30\text{m/s}$. A 500 g blob of clay is moving in the positive x-direction at $10\text{m/s}$. They collide and stick. What is the speed and direction of the resulting blob of clay? Give your answer as an angle counterclockwise from the positive x-axis.

An explosive projectile is flying through the air horizontally at a speed of $200\text{m/s}$, when it explodes into two fragments, one twice as heavy as the other. The heavier fragment falls straight downward. What is the speed of the lighter fragment just after the explosion?