Kinetic Friction Coefficient · CAP 2010 #Q17

Physics · mechanics

Problem

At time t = 0 a block of mass m moves with momentum p along a rough horizontal surface. If it comes to a complete stop in time t, then the coefficient of kinetic friction

μ_k

is given by a)

\frac{p}{mgt}

; b)

\frac{pg}{mt}

; c)

\frac{ptg}{m}

; d)

\frac{pt}{mg}

; e) None of the above.

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