A ball falls from 20 m height on floor a...

A ball falls from 20 m height on floor and rebounds to 5 m. Time of contact is 0.02 s. Find acceleration during impact.

`1200 m//s^(2)`

`1000 m//s^(2)`

`2000 m//s^(2)`

`1500 m//s^(2)`

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