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18 April, 08:18

What is the speed of a 48 - kilogram dog running across a lawn with 216 joules of kinetic energy?

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  1. 18 April, 09:07
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    The answer is 20.426 m/s. From the equation of Kinetic energy, KE = 1/2 mv^2. An equation for v can be computed using algebra. v^2 = (2KE) / m then taking its square root this would yield an equation of sqrt ((2 KE) / m).
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