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find the mass of a ball on a roof 30 meters high, if the ball's gravitational potential energy is 58.8 joules

Respuesta :

The potential energy of an object is calculated by the expression:

PE = mgh    where m is the mass, g is the gravitational acceleration and h is the height of the object from the ground.

PE = 58.8 J = m (9.81 m/s^2) (30 m)

m = 0.1998 kg

Hope this helps.

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