1. Susan kicks a soccer ball across a grassy field and it eventually comes to a stop. If Newton's law of inertia is true, why did the ball stop?

2. When in orbit the space shuttle used very little rocket power to maintain its speed despite traveling over 15,000 mph. How were NASA engineers able to do this?

3. In the case of a car crash, the body's inertia will continue to carry it in its initial direction. If the person is wearing a seatbelt, in which direction will this force act?

4. you pull Nick on a skate board at a constant acceleration. A friend who weight the same as Nick gets on the skateboard too. How is the force you have to apply affected to maintain a constant acceleration?

5. The data chart below indicates how carts of different mass accelerate when a constant force is applied. Using the data, determine the amount of force used in Newtons

6. Josh Hamilton crushes a home run over the center field wall. The ball struck with a force of 20N. How much force does the ball apply to the bat?

7. You launch two different model rockets using two different engines. Each engine produces a different amount of force. What conclusion can you reach about the mass of the two rockets?

8. A tennis ball being dropped, then bouncing upward after hitting the ground is an example of:

9. Consider the two examples below. In which instance is more work done?

10. At what point on a roller coaster does the train have the highest potential energy?

11. What energy transformations are occurring in this scenario?

12. At which point on a roller coaster does the train have the highest kinetic energy?

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