Midterm Review

So far, you have learned about
- vectors
- kinematics under constant acceleration
- dynamics: forces and acceleration
Do these tools allow you to solve all kinds of mechanics problems? No! There are several types of situation which are too complicated for the use of forces:
- motion under (crazily) varying acceleration
- collisions
There is another way to look at situations which sometimes makes them much easier to understand -- using the derived quantities
- energy
- momentum
Both energy and momentum obey conservation laws, which means that (under the proper circumstances) one can concentrate simply on the start and end of some complicated action, and ignore all the stuff in the middle.

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