A 76.5 kg cross-country skier skiing on unwaxed skis along dry snow at a constant speed of 4.00 m/s experiences a force of friction of - 60.0 N. What is the coefficient of friction between unwaxed skis and dry snow?

a. 0.08

b. 0.78

c. 1.28

d. 12.5

Question

Itzel

Physics

9 April, 23:48

A 76.5 kg cross-country skier skiing on unwaxed skis along dry snow at a constant speed of 4.00 m/s experiences a force of friction of - 60.0 N. What is the coefficient of friction between unwaxed skis and dry snow?

a. 0.08

b. 0.78

c. 1.28

d. 12.5

+4

Answers (1)

Know the Answer?

Briana Blanchard · Answer 1

The force of friction = (weight) x (coefficient of friction)

Skier's weight = (mass) x (gravity) = (76.5) x (9.8) = 749.7 N

Force of friction = (749.7) x (coefficient of friction) = 60.0 N

Coefficient of friction = 60 / 749.7 = 0.08 (rounded)

Choice-'A' is the closest choice offered.

A 76.5 kg cross-country skier skiing on unwaxed skis along dry snow at a constant speed of 4.00 m/s experiences a force of friction of - 60.0 N. What is the coefficient of friction between unwaxed skis and dry snow?a. 0.08b. 0.78c. 1.28d. 12.5

A 76.5 kg cross-country skier skiing on unwaxed skis along dry snow at a constant speed of 4.00 m/s experiences a force of friction of - 60.0 N. What is the coefficient of friction between unwaxed skis and dry snow?

a. 0.08

b. 0.78

c. 1.28

d. 12.5