A soccer ball is traveling at a velocity of 50 m/s. The kinetic energy of the ball is 500 J. What is the mass of the soccer ball?
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Answer:
The same energy as the energy as the kinetic energy gained in the distance a 0.5 kg soccer ball moves when accelerating in a gravitational field from zero meters per second to 3 meters per second. The change in position in terms of decrease in height off of the ground means a loss of potential energy due to a change in entropy. That energy loss in position is the energy gain in the form of kinetic energy, not including energy loss due to air resistance. To lift the same mass the same distance it fell to reach the velocity that it did is to achieve the same potential energy of it’s original position. Force times distance equals work, which equates to whatever units you would like. Some prefer newton meters. Others foot pounds. I will leave the specifics of the equations to you. You will find them in a physics book. The actual algebra and calculus is boring to me. It’s all just codes. Like plugging in inputs into a computer algorithm to get outputs. Or, functions if you will.
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