Question

Jeanette, mass 70 kg, is skiing down an incline of 38°. The snow is dry and...

Jeanette, mass 70 kg, is skiing down an incline of 38°. The snow is dry and the skis are hickory.

a) What is Jeanette's acceleration?

b) If the snow melts and becomes wet, what is the new acceleration?

Material Coefficient of Static Friction Coefficient of Kinetic Friction
Waxed hickory skis on dry snow 0.06 0.04
Waxed hickory skis on wet snow 0.20 0.14
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Answer #1

Concept - since the ski is moving, coefficient of kinetic friction will be used. Use Newton’s law of motion to find the required acceleration As shown below.***************************************************************************************************
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