Back(II) A package of mass m is dropped vertically onto a horizontal conveyor belt whose speed is v=1.5m/s , and the coefficient of kinetic friction between the package and the belt is μₖ = 0.70.
(b) How far does the package move during this time?
A 68-kg water skier is being accelerated by a ski boat on a flat ('glassy') lake. The coefficient of kinetic friction between the skier's skis and the water surface is μₖ = 0.25 (Fig. 5–59).
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(c) Explain why the skier's acceleration in part (b) is greater than that in part (a).