A stone is dropped from the height of 24.5 metre it hit the ground and dig 3 cm into it what is the stones velocity of strike on the ground what is the retardation produced by the ground what is the total time of motion

A stone is dropped from the height of 24.5 metre it hit the ground and dig 3 cm into it what is the stones velocity of strike on the ground what is the retardation produced by the ground what is the total time of motion acernent (m)

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