An object of mass 5 kg slides across a horizontal surface with a coefficient of kinetic friction of 0.21. If

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An object of mass 5 kg slides across a horizontal surface with a coefficient of kinetic friction of 0.21. If

[From: ] [author: ] [Date: 11-10-30] [Hit: ]

W = 10.W = -51.......

An object of mass 5 kg slides across a horizontal surface with a coefficient of kinetic friction of 0.21. If the slides 5 meters in the positive x direction what is the work done by friction in Joules?

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W = Ff*dcos(angle between force and displacement)
W = 0.21(5*9.8) * 5cos180
W = 10.29 * -5
W = -51.45J

1

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