A tennis ball is dropped at a speed of 32m/s, and a mass of 0.084KG. The tennis ball travels .010 seconds before stopping at a wall.

Calculate average force by raquet on ball, and force of ball on raquet.

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Who did the experiment on how to measure average speed between to points

Who did the experiment on how to measure average speed between to points

Yep , definitely homework... however, I would like to point out that you "dropped it" and then it hit a "wall" instead of the floor or the ground. Are you sure you are stating the problem correctly?