Solve Prob. 13-18 if the suitcase has an initial velocity down the ramp of v_A = 10 ft/s and the coefficient of kinetic friction along AB is μ_k = 0.2.

Prob. 13-18

A 40-lb suitcase slides from rest 20 ft down the smooth ramp. Determine the point where it strikes the ground at C. How long does it take to go from A to C?

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20 ft 30° 4 ft + -R-