Consider a 0.20-kg ball interacting gravitationally with the earth. Imagine that we set up a reference frame in standard orientation on the earth's surface and define ground level to be the reference separation and set z = 0 there. Imagine that a person at the bottom of a well throws the ball upward and that when the ball leaves the person's grasp 8.0 m below the ground, it has a speed of 6 m/s. What is the system's total energy at this time?