Physics Experiment

Hello people. Try to think of an experiment to measure the value of g(acceleration due to gravity) using a soccer ball and other materials. State all your assumptions and describe the use of any apparatus.

>>5

The velocity at point one in my example is zero, as it is at a fixed point to begin. (v=0)  The velocity at the second point is acceleration multiplied by time. (v=at).  The average velocity is 0.5at, so all you need to do is to double the average velocity, and then you get x=at, which rearranges to (x/v)=a, which gives you the acceleration.