HW

1.  Consider the informal lab from today.  If you launched a ball from a height of 12-m, and it traveled 25-m, how fast was it traveling?

2.  Thinking in general terms about projectiles:

a.  If you were to double the initial speed of the projectile (launched horizontally), what effect would it have on the horizontal displacement (where it lands)?

b.  If you were to double the initial vertical height of the projectile (but keep the speed constant), what effect would this have on the time in air?

c.  Go back to 1-D motion for a bit.  Consider dropping an object from a certain height on the Earth vs. the same object at the same height on the Moon.  How do the drop times compare?  Calculate, if possible, the extent to which they are different (ie., one time is how many times the other time, etc.).

3.  Finally, have a look at the work of Isaac Newton.  List some of his noteworthy accomplishments.