Things You Thought You Knew – What is Energy?
StarTalk Radio
The Trade-Off Between Gravitational Potential Energy and Kinetic Energy
In a roller coaster, you're converting gravitational potential energy to kinetic energy. And if they designed it right, the frictional energy that you lose doesn't go up higher and higher. The hills you go over have to get lower and lower. That is when the ham sandwich becomes actual vomit.
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