(a) How much work is done when you push a crate horizontally with 150 N across a 20 m school floor?       (b) If the force of friction on the crate is a steady 50 N, what will be the KE gained by the crate?       (c) How many joules of energy will be turned into heat?

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Chapter7: Work, Energy, And Energy Resources
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2.   (a) How much work is done when you push a crate horizontally with 150 N across a 20 m school floor?

      (b) If the force of friction on the crate is a steady 50 N, what will be the KE gained by the crate?

      (c) How many joules of energy will be turned into heat?

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