# Answer on Mechanics | Relativity Question for Melissa

Question #14709

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?

Expert's answer

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.

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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