A canon ball is shot horizontally from a point 24 meters above the ground and strikes the ground after traveling a distance of 55 meters. With what speed was it shot?
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Expert's answer
2012-09-25T11:16:01-0400
h = g * t^2 / 2, s = V * t t = sqrt( 2 * h / g ) V = s / t = s / sqrt( 2 * h / g ) V = 55 / sqrt( 2 * 24 / 9.81 ) = 24.86 m/s Answer: 24.86 m/s.
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