Question

Questions to consider:

Answer 1

The potential energy of the skater is 2352 J

Explanation:

The gravitational potential energy of a body is the energy possessed by the body due to its position in a gravitational field. Near the Earth's surface, it can be calculated as

$PE=mgh$

where

m is the mass of the body

$g=9.8 m/s^2$ is the acceleration of gravity near the Earth's surface

h is the height of the body relative to the ground

For the skater in this problem,

m = 60 kg

h = 4 m

Substituting, we find her potential energy:

$PE=(60)(9.8)(4)=2352 J$

Learn more about gravitational potential energy:

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