Question

If gravity is the only force present, what is the total mechanical energy of a

glass of milk falling off a table at a time when its potential energy is 15 J and
its kinetic energy is 12 J?
A. -3J
B. 15 J
C. 27 J
D. 12 J

Answer 1

27 J

Step-by-step explanation:

1. The equation for ME is PE + KE

2. Therefore 15J + 12J = 27J