HRWP45p32

> How do you find the intial velocity in the equation v=at + v0
> if you
don't know the velocity? Because you can't calculate
> the distance since
all the equations with x - x0 either have v or
> v0 and you can't
caluculate v without the distance or v0.

The main clue to this problem is the word "dropped". That is physics code for v0 = 0. Therefore, the solid line is a simple v = -gt.

If you are having trouble, use the apple 1's trajectory to calculate the height of the bridge. Knowing the height and the time of apple 2's fall, you can calculate v0.

--Dr. G.

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