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Problem 7.8: A ball is dropped on a hard floor

Please wait for the animation to completely load.

A ball is dropped on a hard floor as shown in the animation (position is given in meters and time is given in seconds). Assume that the acceleration due to gravity is 9.8 m/s2. Restart.

  1. What is the speed of the ball the instant before it hits the ground?
  2. How much energy (in % of original energy) is lost in the collision with the floor?
  3. What is the coefficient of restitution for the ball?

The coefficient of restitution, for the collision where one object does not move, is the ratio |vf | / |vi|.

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