Physics recoil/friction problem?

1. Oct 8, 2011

Can Anybody Help me with this physics problem?
A skiier stars from rest at the top of the hill. As he skiies down the hill he fires a 30-06 with a uzzle velocity of 835m/s ata the bottom of the valley in the direction of motion. He has just enough energy to reach the top of the second hill(8.74 m lower than the first) and come to a stop. The distance he travels is 100m. What is the coefficient of friction of the snow?

I don't need an answers, but if anybody has seen a problem like this could you tell me the first step or equation that I would use

2. Oct 8, 2011

vela

Staff Emeritus
What's a 30-06?

3. Oct 8, 2011

its a gun.............the bullet has a velocity of 835 m/s

4. Oct 8, 2011

Dick

Right, it's a thirty-aught-six. This a conservation of momentum and energy problem. But there's not nearly enough information given there to solve it. You'll need the mass of the skier and the mass of the projectile at least. Then I think you can get a force of friction. But to get a coefficient of friction, I think you'll also need the slope of the ski track. It doesn't look like a complete problem to me.

5. Oct 9, 2011