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Consider a rubber ball freely falling from a height $h=4.9 \mathrm{~m}$ onto a horizontal elastic plate. Assume that the duration of collision is negligible and the collision with the plate is totally elastic. Then the velocity as a function of time the height as function of time will be
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$\mathrm{h}=\frac{1}{2} \mathrm{gt}^2, \quad \mathrm{v}=-\mathrm{gt}$ and after the collision, $\mathrm{v}=\mathrm{gt}$.
(parabolic) (straight line)
Collision is perfectly elastic then ball reaches to same height again and again with same velocity.
(parabolic) (straight line)
Collision is perfectly elastic then ball reaches to same height again and again with same velocity.
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