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Coefficient of kinetic friction

Asked Oct 12, 2011, 04:22 PM — 2 Answers
A person tosses his car keys on top of his dresser with an initial velocity of 2.0m/s. How far will the keys slide across the dresser if the coefficient of the kinetic friction between the two surfaces is 0.30?

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Unknown008's Avatar
Unknown008 Posts: 8,147, Reputation: 3745
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#2

Oct 13, 2011, 01:35 AM
Well, I would prefer using the energy equations for that.









And from there, you get:



You have v, the initial velocity, you have mu, the coefficient of friction and you have g, the acceleration due to gravity. Find d
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kinematics29's Avatar
kinematics29 Posts: 2, Reputation: 10
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#3

Oct 13, 2011, 04:21 PM
Thank you! (:
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