26. For an object in motion, the total mechanical energy is conserved if the sum of the object's kinetic energy and its potential energy, KE + PE, is constant. Total mechanical energy was conserved in which of the following trials?
Your Answer is
Correct Answer is F
Explanation
Look at table 1, in each trail, the potential energy of the ball at the highest point is equal to the kinetic energy of the ball at the lowest point, so the total mechanical energy in trails 1-4 is constant