For a 0.1-kg frog to jump to a height of 80cm requires how much energy in joules?

Question

A) 0.566 Joule.
B) 0.784 Joule.
C) 0.584 Joule.
D) 0.287 Joule.

Not sure what I am missing...

PE=mgh
(0.1)(9.8)(80)= 78.4

Answer 1

PE =mgh = 0.1* 9.8 * 0.80 m
= 0.784 J