When the baseball is thrown directly upwards, it has the highest kinetic energy while the potential energy is lowest. At the bottom, the kinetic energy is lowest while potential energy is highest.

A baseball is thrown directly upward at time and is caught again at time *t*. Assume that air resistance is so small that it can be ignored and that the zero point of gravitational potential energy is located at the position at which the ball leaves the thrower's hand.

a. Sketch a graph of the kinetic energy of the baseball.

b. Based on the graph of kinetic energy, sketch a graph of the baseball's gravitational potential energy.

c. Based on the kinetic and potential energy graphs, sketch a graph of the baseball's total energy.

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