8. A block slides along a rough incline. Its total mechanical energy (E) and potential energy (U) respectively at point A are (70 J and 50 J) and at point B are (40 J and 40 J). The work done by the frictional force on the block between points A and B is: a) 10J b) - 40 J c) - 20/ d) - 30 J A

8. A block slides along a rough incline. Its total mechanical energy (E) and potential energy (U) respectively at point A are (70 J and 50 J) and at point B are (40 J and 40 J). The work done by the frictional force on the block between points A and B is: a) 10J b) - 40 J c) - 20/ d) - 30 J A

Name: 8. A block slides along a rough incline. Its total mechanical energy
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Description: 8. A block slides along a rough incline. Its total mechanical energy (E)and potential energy (U) respectively at point A are (70 J and 50 J)and at point B are (40 J and 40 J). The work done by the frictionalforce on the block between points A and B

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter5: Energy

Section: Chapter Questions

Problem 80AP: A 5.0-kg block is pushed 3.0 m up a vertical wall with constant speed by a constant force of...

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