Science Homework Help. HU Physics Coefficient of Kinetic Friction Question
I’m working on a physics question and need an explanation and answer to help me learn.
To avoid a car suddenly stopping in front of him, Allen slams on his brakes and his car slides 20 m to a stop. The coefficient of kinetic friction between the road and Allen’s car is 0.75. A police officer who witnessed this incident tries to give Allen a ticket for exceeding the 40 mph (17.8 m/s) speed limit. Does Allen deserve that ticket?
Instructions
In a neat and organized fashion, write out a solution which includes the following:
- A sketch of the physical situation with all relevant states shown and all physical quantities clearly labeled.
- An energy bar chart, motion diagram, and force diagram for the car as it slides to a stop.
- Determine whether Allen deserves to get a speeding ticket from the information given. Show all steps you take and explain the thought process behind each step as you work.
- Evaluate your solution to catch any errors you might have made.
