A parachutist drops freely from helicopter for 20 s before the parachute opens out Then he descends with retardation of 40 m s2

Question

A parachutist drops freely from helicopter for 20 s before the parachute opens out Then he descends with retardation of 40 m s2 The height of the helicopter from the ground level is 2500 m When he drops out his velocity on reaching the ground will be 1 10 ms 1 2 10 10 ms 3 20 ms

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