- #1

tariel

- 9

- 0

I understand that the graph is shifting, and B and C of the second bounce are not necessarily equal to those numbers. How do I find the true values of B and C for each subsequent bounce?

## Homework Statement

This is my graph:

http://i.imgur.com/5pnfJY5.png

## Homework Equations

Y = Ax^2 + Bx + C

y = y0 + vot + 1/2at^2

## The Attempt at a Solution

For the first bounce, I was able to find the initial height by doing:

Y = Ax^2 + Bx + C, with x = 0.6 seconds

Y = -4.460(0.6)^2 + 5.425(0.6) - 0.7426

Y = 0.9068 m

And velocity:

dy/dx = 2(-4.460)x + 5.425, with x = 0.6 seconds

dy/dx = 0.073 m/s

I believe I need to find these values in order to calculate the kinetic energy before and after impacts, and finding linear momentums - I have to fill out a chart like this one for seven bounces:

I also have no mass for the ball, p is basically equal to the velocity. And I am told that PE must be equal to KE of the ball at the beginning and at the end of each interval of free flight.