Jeehub Logo
Q.) A parachutist drops first freely from an aeroplane for 10 s and then parachute opens out. Now he descends with a net retardation of 2.5 m/s^2. If he bails out of the plane at a height of 2495 m and g = 10 m/s^2, his velocity on reaching the ground will be
[A]5 m/s
[B]10 m/s
[C]15 m/s
[D]20 m/s