### Standards

**The laws of conservation of energy and momentum provide a way to predict and describe the movement of objects. As a basis for understanding this concept:**

- 2a. Students know how to calculate kinetic energy by using the formula E = (1/2) mv
^{2}. - 2b. Students know how to calculate changes in gravitational potential energy near Earth by using the formula (change in potential energy) = mgh (h is the change in the elevation).
- 2c. Students know how to solve problems involving conservation of energy in simple systems, such as falling objects.
- 2d. Students know how to calculate momentum as the product mv.
- 2e. Students know momentum is a separately conserved quantity different from energy.
- 2f. Students know an unbalanced force on an object produces a change in its momentum.
- 2g. Students know how to solve problems involving elastic and inelastic collisions in one dimension by using the principles of conservation of momentum and energy.
- 2h.* Students know how to solve problems involving conservation of energy in simple systems with various sources of potential energy, such as capacitors and springs.