Physics 163

Unit 5: Work, Energy and Power

Problem Set B

 

Problem 1:

A car is moving across a level highway with a kinetic energy of 120922 Joules. The brakes are applied and the wheels become locked as the 841-kg car slows to a stop over 5.31 seconds. Determine the work (in Joules) done upon the car. If the value is negative, then enter your answer as a negative number.

 

 

 

Use the equation below to solve this problem. Cancel terms, substitute and solve.

 KEi + PEi + Wnc = KEf + PEf

 

Work and energy principles and mathematical relationships can be reviewed on the Set B Overview page.

Further information about the work and energy relationship is available online at The Physics Classroom.    

 

Return to: Set B Overview Page || Audio Help Home Page || Set B Sample Problems

Audio Help for Problem: 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || 11 || 12 || 13 || 14

Retrieve info about: Audio Help || Technical Requirements || Usage Policy || CD-ROM

Return to: Physics 163 Problem Set Page || Physics 163 Home Page