Bonus Optional Assignment
This assignment is due at the beginning of class on Monday Sept.
11. You should simply come up to the front of the room and turn
it in, there won't be any announcement in class.
1. Imagine dropping a bowling ball and a ping
pong ball from the tallest building on campus. If gravity were
the only force acting on both objects, would the bowling ball arrive at
the ground BEFORE, at the SAME time, or AFTER the ping pong ball.
2. Explain (in words or with a sketch) how Galileo proved
that air has weight.
3. How much did the steel bar (that was passed around in
class) weigh?
4. You hopefully were able to feel how heavy and dense mercury
is, it has a density of density of 13.6 g/cm3. Two
elements have a density of 22.6 g/cm3, what are they?