The potential energy is given by the formula P.E = m g h, where m is the mass of the object in kg, g is the acceleration due to gravity in \frac{m}{s^{2}}, h is the height of the object in meters.

The mass of the object is 75 kg, the height of the object is given in meters, and g is the acceleration due to gravity which is 9.8 \frac{m}{s^{2}}

P.E\ =\ 75\ kg\ \times9.8\ \frac{m}{s^2}\ \times300\ m\ =\ 220,500\ kg\ \cdot\frac{m^2}{s^2}\ =\ 220,500\ J

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