A parachutist drops from an aeroplane for `10s` before the parachute opens out. Then he descends
Channel: Doubtnut
Date: 2020-04-12

A parachutist drops from an aeroplane for `10s` before the parachute opens out. Then he descends with a net retardation of `2.5ms^(-2)`. If he bails  out of plane at a height of `2495m` and `g=10ms^(-2)`, his velocity on reaching the ground will ve