Chapter 4 Quiz

1. Define speed
2. Define velocity
3. Define acceleration
4. Which planet moves faster, Mars or Earth?
5. Explain how the Moon falls towards the Earth?
6. Why  doesn't the  Moon hit the Earth?
7. What is the distance between Sun and Earth in Astronomical Units?
8. Use the conservation of angular momentum to explain an ice skater increase in angular velocity when she moves her arms in.
9. Use the conservation of energy to explain why a coin moves faster when dropped from a higher building.
10. Where was Isaac Newton born?