Plotting – plot potential, kinetics and total energy

How do I do that:

Make a manipulator that displays the graphs of three quantities in the same graph: potential energy, kinetic energy, and total energy as a function of time. The manipulator controls the initial position {-0,20 m to 0,20 m} and the initial velocity {-0,40 m / s to 0,40 m / s}

I'm still trying to learn Mathematica and any help would be appreciated!