Question:

If a stone fell for 12 seconds?

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assuming its acceleration is 10metres/second, will it have fallen 732 metres?

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  1. answer 720 meters

        v^2 =  2gd

          d=v^2/2g

            =120^2/2*10

           =14400/20

           =720

      


  2. in a vacuum,it would fall more than 1400m.

    in air,drag would limit the velocity to terminal
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