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IB Investigation Help

1. Homework Statement
Drop the ball you have been given and watch it bounce: once and rebound, twice and so on. What could we measure in this process? What variables could change? What would change? Now investigate any one aspect of the bouncing of the ball.

This is my research question: How will the height affect the time between the first and second bounce of the ball?

I started by dropping a ball from a height of 1 meter. I then used a stopwatch to measure the time between the first and second bounce. I did this for each 10cm until I reached 0 cm.

2. Homework Equations
v=displacement/time
Ek= 1/2 mv2

3. The Attempt at a Solution
I have used the velocity formula above to get a velocity for each 10cm measured. As I am writing up my lab, I am having trouble getting thoughts down on paper, specifically the theory. Maybe someone could tell me if what I am doing seems correct from a physics point of view, so I am not totally off.

Thanks for any help!
 

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