Physics Essentials For Dummies by Steven Holzner & Daniel Wohns

Author:Steven Holzner & Daniel Wohns
Language: eng
Format: epub
ISBN: 9781119590392
Publisher: Wiley
Published: 2019-05-14T00:00:00+00:00

Where does the kinetic energy go when friction is involved? If a block is sliding along a horizontal surface and there’s friction, the block goes more and more slowly until it comes to a stop. The kinetic energy goes away, and you see no increase in potential energy. What happened? The block’s kinetic energy dissipated as heat. Friction heated both the block and the surface.

You now know the ins and outs of kinetic energy. So how do you calculate it?

Breaking down the kinetic energy equation

The work that you put into accelerating an object — that is, into its motion — becomes the object’s kinetic energy, KE. The equation to find KE is

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