2. Gravitational Potential Energy
3. Kinetic Energy
4. 10 N, Up
5. It was losing potential energy as it gained kinetic energy.
6. Something accelerates when it gets faster, goes slower, or changes direction. So the gas pedal, the brake pedal and the steering wheel are accelerators.
7. The gravitational potential energy at the start of the pendulum is the maximum energy in the pendulum. It can't gain energy unless you add more energy somewhere. So the pendulum will never go higher than where it starts.
8. Manipulated variable = type of ball.
Controlled variable = height of the drop
It is a controlled experiment because all of the variables are constant but the one thing you are testing which is the type of ball.
9. The object will sink.
10. The object will float. Archimedes' Principle
11. 3.5 g/mL It will sink because the density is greater than 1.0 g/mL
12. 1.3 km/min
13. Volume
14. Mass and gravity
15. If its distance changes relative to a fixed point of reference.
16. A is moving faster and B is moving slower but they are both moving at a constant speed (straight line on the graph).
