13. a 1 kg rock is at a height of 100 meters. what is its gravitational potential
energy?

The gravitational potential energy of the rock at the given position is 980 J.

The given parameters;

The gravitational potential energy of the rock is the energy possessed by the rock due to its position above the ground.

The gravitational potential energy of the rock is calculate as;

P.E = mg

where;

P.E = 1 x 9.8 x 100

P.E = 980 J

Thus, the gravitational potential energy of the rock at the given position is 980 J.

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P.E = 980 J

Explanation:

Given,

The mass of the rock, m = 1 Kg

The height of the rock from the ground, h = 100 m

The acceleration due to gravity, a = 9.8 m/s²

The gravitational potential energy of the stone is given by the formula

                              P.E = mgh joules

Substituting the given values in the above equation,

                              P.E = 1 x 100 x 9.8

                                   = 980 J

Hence, the gravitational potential  energy of the stone is, P.E = 980 J

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