A golf ball of mass 50 grams is struck and has a velocity of 70 m/s when it leaves the tee.  The golf ball then hits a fence and comes to a stop in 0.02 seconds. 1. What is the kinetic energy of the ball as it comes off the tee? 2.What is the momentum of the ball as it comes off the tee? 3.What is the stopping force acting on the ball?

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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.