A 0.5-kg ball in the air has an initial velocity Vo = [-40 i] m/s + [-40 J] m/s. It falls for a total time of 1s. Assume that positive x-values are to the right and positive y-values are upward. The initial Kinetic energy of the ball is 800j What is the final kinetic energy K of the ball? What is the change in kinetic energy of the ball? What is the ball's change in height (delta y) after it falls 1 s?

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.