1.

A stone falls freely rest. The distance covered by it in the last second is equal to the distance covered by it in the first 2 s. The time taken by the stone to reach the ground isA. `2.5 s`B. `3.5 s`C. `4 s`D. `5 s`

Answer» Correct Answer - A
Let t: time of journey
`1/2g(2t-1)=1/2g(2)^(2)`
`t=2.5 s`


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