Aball that has a mechanical energy of 65 j has 12 j of kinetic energy. the ball has j of potential energy.

53 J

Explanation:

The mechanical energy of an object (ME) is equal to the sum of the kinetic energy (KE) and the potential energy (PE):

In this example, the ball has mechanical energy ME=65 J and kinetic energy KE=12 J, therefore we can re-arrange the equation to calculate its potential energy:

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