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  4. A parachutist after bailing out falls 50m without friction. When parachute opens, it decelerates at 2m/s2 He reaches the ground with a speed of 3m /s, At what height, did he bail out

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Q. A parachutist after bailing out falls 50m without friction. When parachute opens, it decelerates at $2m/s^2$ He reaches the ground with a speed of $3m /s$, At what height, did he bail out

Motion in a Straight Line

Solution:

u = $\sqrt{2g \times 50}$ (g = 9.8 m/s$^2$)
$\nu^2 - u^2 = 2as$
height at which he bails out = (50 + s)