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

User Carlo
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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.
User Kelmen
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