Each of the images below represents a plot. The horizontal axis on each plot represents time. The vertical axis represents whichever quantity (position, velocity, acceleration) is being discussed. The origin of each plot is represented by 0, and the function is represented by the colored line. For each of the statements at the bottom select the image that best represents the requested plot. You may use the same image for multiple statements if it is appropriate. "KAK °F A B You hold your arm out over a cliff and release a stone from rest. Consider the time from just after the stone leaves your hand to just before it hits the ground. Which graph best represents the velocity of the stone as a function of time? (Choose up to be the positive direction.) HBA motorcycle starts from rest at a stoplight and undergoes constant acceleration to the West. Which graph best represents the position of the motorcycle as a function of time? (Choose East to be the positive direction, and choose the initial location of the motorcycle as the origin.) FB You throw a rock straight up, and it falls back into your hand. Consider the time from just after the rock leaves your hand to just before it hits your hand coming back down. Which graph best represents the acceleration of the rock as a function of time? (Choose up to be the positive direction.) DBA van is driving East at a constant velocity. Which graph best represents the velocity of the van as a function of time? (Choose East to be the positive direction.) Submit Ansvar Incorrect. Tries 2/10 Previous Tries This discussion is closed. Send Feedback

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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.