Find the drag factor (coefficient of friction).
1. A drag sled made for a tire weighs 45 lbs. a spring scales measures a force of 36lbs that is needed to pull the sled at a steady speed. What is the drag factor of the road at this location?
2. A 3000lb vehicle strikes a very old class 4 timber utility pole and causes it to break. What could you expect the intrusion into the vehicle is, based on this information? describe how you arrived at this intrusion.