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.

The equation for the conservation of mechanical energy is A PE before KE before PE after KE after B KE 12mv C Total PE before an event total PE after the event class=