An aeroplane drops a parachutist.After covering a distance 40m he opens parachute and drops at the rate of 2m/s^2.If he reaches ground with speed of 2 m /s, how long does he remain in the air.
Asked by Arun Iyer | 19th Feb, 2011, 04:41: PM
Falling velocity = acceleration due to gravity X time
2 = 10Xt, t =0.2s
Hope this helps.
Answered by | 26th Feb, 2011, 07:27: AM
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