Physics 163

Unit 2: Newton's Laws of Motion

Problem Set B

Problem #12:

A 1186.1 kg car moving rightward with a speed of 34.6 m/s skids to a stop in 3.41 seconds. Determine the coefficient of friction between the car tires and the roadway. (Enter your answer, accurate to the third decimal place.)

• Read the problem carefully and diagram the physical situation (free-body diagram)
• Identify known and unknown information in an organized manner (list on diagram)
• Take the time to plot out a strategy prior to beginning the solution (see graphic below)
• Identify an appropriate formula to use
• Perform step-by-step algebraic manipulations

General information about Set B concepts and principles can be found on the Set B Overview page.

The task of constructing a free-body diagram for a physical situation is discussed in detail at The Physics Classroom.

The task of determining an individual force value if given mass and acceleration information is discussed in detail at The Physics Classroom.

The task of using kinematic equations to determine an unknown kinematic variable is discussed in detail at The Physics Classroom.

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