a parachutist jumps from an aeroplane with vilocity 'u'. parachute opens and accelerate downward with 2m/s sq.. He reaches the ground with a velocity 4m /sec. how long the parachutist remained in air
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2 sec
but if we see it does not look like a person jumps 4 metres from a plane
but if we see it does not look like a person jumps 4 metres from a plane
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t = (v-u)a
t = (4-0)2
t=2 s
t = (4-0)2
t=2 s
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