Projectiles!

Consider the material from today's class, particularly the demo wherein I launched and dropped balls simultaneously. Answers these questions based on that scenario.

1. Why did they land at the same time?

2. Can you imagine a situation in which they would have not landed simultaneously? Discuss.

3. If the projected ball had been launched from a height of 6-m, with an initial speed (horizontally) of 8 m/s:

A. How long would it take to hit the ground?

B. How far horizontally would it go?

4. We will have an informal lab on Thursday. You will have a ramp that allows a ball to be launched horizontally. Propose a way to experimentally determine its initial speed. You will not be able to use a photogate.