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Gravitational potential energy is energy stored in a mass due to its position in a gravitational field When a heavy object is lifted, work is done since the object is provided with an upward force against the downward force of gravity Therefore energy is transferred to the object This equation can therefore be derived from the work doneM = 10 kg 175,000 = \ (\frac {1} {2}\) x 10 kg x v 2 175,000 = 600 kg x v 2 v 2 = \ (\frac {175,000 J} {600 kg}\) v 2 = v = \sqrt {} v = 171 m/s The car has a speed of 171Need to know Gravitational potential energy E p, for an object with a mass, m, a height, h, from the ground and gravitational field strength, g=98N/kg Examples Kinetic energy E k, for an object with a mass, m, moving with a speed, v Examples; How Is Potential Energy Converted To Kinetic Energy Quora Gravitational potential energy equation gcse physics