A parachutist after bailing out, falls 50 m without friction. When parachute opens, it decelerates at 2 ms–2. He reaches the ground with a speed of 3 ms–1. At what height did he bail out?

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A parachutist after bailing out, falls 50 m without friction. When parachute opens, it decelerates at 2 ms<sup>–2</sup>. He reaches the ground with a speed of 3 ms–1. At what height did he bail out?