We reviewed some questions concerning the first homework.

We considered a classic problem of constant acceleration, a ball thrown up into the air (at the edge of a cliff) determining when and where it reached its highest point and when it hit the ground and how fast it was going just before it hit.  We solved it a few different ways and showed that the results were the same. Mathematically some solutions involved the quadratic formula and some did not.

We derived an equation for constant acceleration situtaion that does not involve time.

We solved another example problem (in multiple ways).