Question

The equation for the conservation of mechanical energy is:

A. PE (before) + KE (before) = PE (after) + KE (after).
B. KE = 1/2mv.
C. Total PE before an event = total PE after the event.
D. PE (before) + KE (before) = 0.

Answer 1

The answer is A because the equation is KEi+PEi=KEf+PEf

i means initial (before) and f means final (after)