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22-05-2014
Mathematics

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what is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second?

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22-05-2014

PE = m•g•h, where m is mass in kg, gis 9.8m/s2, and h is height above the earth in meters. If an object is on the ground, it's height above the earth is zero, so it has zero PE.

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