1. A car crashes into a brick wall (the driver dives out of the car at the last second). Before the crash, the car had a lot of motion energy (heavy object + high speed). Where does this energy go after the crash? Discuss the type of energy afterwards, and which objects it is transferred to.

2. Below are several situations. For each, explain how energy is being transferred, and how it is changing forms. Which objects seem to be gaining energy? Which seem to be losing energy?

a. Water boiling on a stove.

b. A book sitting in the sun.

c. A bowl of soup being cooked in a microwave.

3. A car drives at the same speed on the highway. Is any energy being transferred in this situation? Is any energy changing forms? Explain your answers.

4. You push a book against a wall. Is any energy being transferred in this situation? Is any energy changing forms? Explain your answers.

5. Sometimes, energy appears to be â€œlostâ€ because it is difficult to figure out where it went. Describe a situation of your own where energy seems to â€œdisappearâ€, and identify where the energy really went, and in which forms.

6. When you watch TV, there is sound and light energy. Where does that energy come from? Go one step at a time (â€œelectrical energy gets to the TV from the wiresâ€ is one step) backwards to find the original source and form of the energy.

7. Describe an object that has a lot of kinetic energy, but not very much mass.

8. Describe an object that has a lot of kinetic energy, but not much speed.

9. Usain Bolt has a mass of 94 kg and runs at a top speed of 12 m/s.

a) How much kinetic energy does he have at that speed? Show your work.

b) A car that weighs 1000 kg has the same kinetic energy that you calculated above. How fast does it need to move to have that energy? Show your work.

1. A car crashes into a brick wall (the driver dives out of the car...