Question

2. A skier is skiing downhill.

A. Copy the forces in the diamgram, then label the weight, W, of the skier and the reaction, R, of the slope.

B. Show the direction of the resultant force on the skier

C. Calculate the size of the resultant force on the skier. The skier accidentally skis onto a patch of grass and she experiences a force caused by friction with the grass. This force stops the skier from moving.

D. On your diagram, draw an arrow showing the direction and estimated size of this force. Scale: 1cm = 400N

Answer 1

Answer:

Here is the diagram of the forces acting on the skier:

[Diagram of a skier skiing downhill, with arrows representing the forces of gravity, the reaction of the slope, and friction.]

The weight of the skier is represented by the arrow pointing down, and the reaction of the slope is represented by the arrow pointing up. The direction of the resultant force on the skier is the same as the direction of the slope, which is up. The size of the resultant force on the skier is equal to the sum of the weight of the skier and the reaction of the slope.

When the skier accidentally skis onto a patch of grass, she experiences a force caused by friction with the grass. This force stops the skier from moving. The direction of this force is opposite to the direction of the skier's motion, and the size of this force is equal to the coefficient of friction between the skier's skis and the grass times the normal force between the skier and the grass.

On the diagram, the arrow representing the force of friction is drawn pointing up from the patch of grass. The scale is 1cm = 400N, so the force of friction is about 1cm long