4

An 80 kg skier stands at the top of a 40 meter slope. What is her gravitational potential energy

before she skies down the slope?

O 3200

O 31,360

19.63

O 15,680

31,360J

Explanation:

Gravitation potential energy (gpe) is calculated from the formula mgh.

That implies, gpe = mgh

Therefore substituting the values of m and h as given in the question, knowing in mine that the acceleration due to gravity (g) is 9.8 N/kg, will give 31,360J

Never forget to put your SI units, because even if your answer is numerical correct, it will be incorrect because it represents no physical quantity.