Answer to Question #40811 in Mechanics | Relativity for promise

Question #40811
Which of the following is not true? A crate sliding across the floor does work against frictional forces Work is done if a component a force acting on an object exists in the direction of its displacement A man with a bag of cement on his head does work to move the bag of cement as he walks from place to place on a flat horizontal floor Work is a scalar quantity
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Expert's answer
2014-03-31T11:15:49-0400
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