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- Homework Statement
- A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, show that

the ensuing motion is periodic.

- Relevant Equations
- 1-D Kinematic equation

For part (a) of this problem,

The solution is,

However why did say show the motion is periodic, but then the solutions don't show it, instead explain how it is periodic?

Is there a way to prove that the motion is periodic other than the solution to part (b)?

Many thanks!

The solution is,

However why did say show the motion is periodic, but then the solutions don't show it, instead explain how it is periodic?

Is there a way to prove that the motion is periodic other than the solution to part (b)?

Many thanks!