Why can’t we convert cars to run on their own kenetic energy?
In: Engineering
Energy is neither created nor destroyed but simply transformed.
This means that a stopped car can’t start moving without energy input to the system. This energy is stored chemically in gasoline, but I suppose you could also get a team of men to push the car utilizing energy stored in the human bodies.
Once the car is moving, forces like friction and air resistance are always working to slow the car down *by taking kinetic energy from the car*. You can’t add energy to the car by taking kinetic energy *from* the car. The energy needs to come from somewhere else.
Your question communicates a fundamental misunderstanding about energy and the impossibility of perpetual motion.
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