1.

A stone falls freely from rest from aheight `h` and it travels a distance `9h//25` in the last second. The value of `h` isA. 145 mB. 100 mC. 125 mD. 200 m

Answer» Correct Answer - C
`h=1/2g t^(2) …(i)`
`(9h)/25=1/2g(2t-1) …(ii)`
Solving, `t=5 s, h=125 m`


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