1. Feb 27, 2009

### xgoddess210

1. The problem statement, all variables and given/known data

A skier is sliding down a 15 degree slope. Friction is not negligible. Identify all forces on the skier.

2. Relevant equations

n/a

3. The attempt at a solution

The choices are: Tension, Kinetic Friction, Weight, Static Friction, Thrust, and Normal Force.

I drew a picture and assumed Kin. Friction, Weight, Thrust, and normal force were the answers but I got it wrong.

I don't think static friction is the answer because that is used to determine the force that must be overcome to initiate movement. Tension seems like a cable or string thing and not something that would affect a skier. I guess I don't know what thrust is but would it be correct to say that K. Friction, weight, and N. Force are the only forces on the skier or am I missing something? Thank you for your help!!!

2. Feb 27, 2009

### xgoddess210

Any comments or thoughts would be appreciated =]

3. Feb 27, 2009

### LowlyPion

Looks right.

There might be thrust if they were pushing with their arms with their poles, but that sounds beyond the scope of the question.