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patriot [66]
3 years ago
15

If there were no air resistance, how long would it take a free-falling skydiver to fall from a plane at 3500 m to an altitude of

400 m , where she will pull her ripcord?
Physics
1 answer:
xxMikexx [17]3 years ago
7 0

By equation of motion we have S = ut + 0.5 at^{2}

Where u = Initail velocity, S= dispalcement, t = time taken, a = acceleration

Here S = 3500-400 = 3100m, u = 0m/s, g = 9.8 m/s^{2}

So, 3100 = 0+0.5*9.8*t^{2}

       t^{2} = 3100/4.9

       t = \sqrt{3100/4.9}

      t = 25.15 seconds

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