Question

An apple with a mass of 0.95 kilograms hangs from a tree branch 3.0 meters above the ground. If it falls to the ground, what is the kinetic energy of the apple just as it reaches the ground?
A 0.28J
B 2.8 J
C 28 J
D 280 J

Answer 1

ke = pe
pe = mgh
= 0.95 x 9.8 x 3
= 27.93 J

Answer 2

The Answer to the problem would be
C. 28 J