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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 3 - Motion in One Dimension > A parachutist drops first freely from an aeroplane for 10 s and then his parachute opens out. Now he descends with a net retardation of 2.5 ms^−2. If he bails out of the plane at a height of 2495 m and g = 10 ms^−2, his velocity on reaching the ground will be

A parachutist drops first freely from an aeroplane for 10 s and then his parachute opens out. Now he descends with a net retardation of 2.5 ms^−2. If he bails out of the plane at a height of 2495 m and g = 10 ms^−2, his velocity on reaching the ground will be

A body travels 200 cm in the first two seconds and 220 cm in the next 4 s with deceleration. The velocity of the body at the end of the 7 s is