1. Michele kicks a 0.75 kg ball with a 45 N force. What is the acceleration of the ball?

2. Why do some balls bounce higher than others? Explain it in terms of useful and wasted energy as well as action and reaction.

3. An 8.0 g bullet is fired from a gun at 120 m/s into a 2.0 kg block of wood sitting on a fence post. If the bullet hits the wood and remains in it, what is the speed of the block after the collision?

4. A 950 kg car accelerates from 0 m/s to 25 m/s in 5.0 seconds. How much power does that require?

5. A pulley system is used to lift a 4500 N weight using a 900 N force. If the mass moves 1.0m while the pulley is pulled 6.0m, what is the efficiency of the machine?

6. If a rock is launched by a slingshot at a 60 angle with a speed of 8.0m/s, how far will it go before it hits the ground?