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Posted by on Friday, February 28, 2014 at 8:15pm.

A rock is thrown horizontally from a bridge hits the water below 30 meter away in the horizontal direction. If the rock was in the air 2seconds, how tall is the bridge?

  • Physics - , Tuesday, March 4, 2014 at 7:18pm

    h = 0.5g*t^2 = 4.9*2^2 = 19.6 m.

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