- #1

alyssad

## Homework Statement

Kerry is pulling a 156-kg sled along a snowy, horizontal path with a 620-N force directed at an angle of 29.0° above the ground. He pulls the sled over a distance of 26.0 m, and the coefficient of kinetic friction between the sled and the ground is 0.0622.

I need to find the amount of work that Kerry does as he pulls the sled AND I need to find the increase in thermal energy.

## Homework Equations

I know that

W = μ

_{k}mgΔr*cos(Θ)

ΔE

_{th}= F

_{k}Δr

## The Attempt at a Solution

I'm not really sure where to begin with finding the answer. I feel like the work equation needs to include the force that is given in the problem statement. And I would appreciate help with the thermal energy part as well.

Thank you!