Physics Tension, Force, and Friction problems
Channel: itkin21
Date: 02/12/2011

A boy exerts a 36-N force as he pulls a 52-N sled across a cement sidewalk at a constant speed. What is the coefficient of kinetic friction between the sled runners and the cement? Ignore air resistance.
Identify tension. Where is it? Who applies it and how?
Assume the same weight, applied force, and coefficient of kinetic friction apply, but now it's being pulled on an incline of 30 degrees for 10 meters. What is the acceleration of the sled in this case?
If it is let go from the top of the inclined plane (from rest), how fast will it be going when it hits the bottom of the ramp?
If it were to collide with a 70-kg person at the bottom of the ramp, how fast would they go together after the collision?