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Basic Physics
Work, energy and power
Work of kinetic friction

6. Work, energy and power

Work of kinetic friction

In 6. Work, energy and power

Formula

W_f=-f_kd

For motion on a flat surface with constant friction

W_f=-\mu_kNd

Tags

energy
physics
physics formula
work
work energy power

Detail

The work of kinetic friction is minus the product of the friction force and the distance traveled.

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Related formulas

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Kinetic friction
$f_k=\mu_kN$
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Energy with non-conservative forces
$K_i+U_i+W_{\text{nc}}=K_f+U_f$
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