1. A female cartoon mouse of mass 65kg runs at 7m/s in the +y direction. A male cartoon mouse of 80kg runs in the +x direction at a velocity of 9m/s. They collide and stick together in a hug after the collision. What is the magnitude and direction of the mice after the collision?

2. A metal ball (60g) with a velocity of 5m/s collides with a pendulum bob of mass 400g that is initially at rest. After the collision, the ball and the pendulum bob stick together. Together they swing to what height before coming to rest?

3. A penguin of mass 6kg swims with a velocity of 1.79m/s in the +x direction. The penguin then glides onto a small chunk of ice of mass 1000kg initially at rest. What is the final velocity of the ice and penguin together?