Question

A 170 lb skydiver with a mass of 78 kg has a speed of 62 m/s at a height of 870 m above the ground. Calculate the mechanical energy of the skydiver. *

Answer 1

Explanation:

mechanical energy = potential energy + kinetic energy

$= mgh + \frac{1}{2}m {v}^{2}$

$= 78(9.8)(870) + \frac{1}{2}(78) {(62)}^{2}$

$= 665028 + 149916 = 814944 \: j$

Therefore , it is your answer.

I hope it helps you. If you have any doubts, then don't hesitate to ask.