Answer:
Kinetic energy is 0 J. Potential is 784 J.
Step-by-step explanation:
Recall that KE = 1/2(m)(v²) and PE = mgh.
The kinetic energy is 0 because the velocity is 0. The potential energy is PE = (2)(9.8)(40), assuming the ball is on earth. Use the equations to plug in the information you know.