The Physics Classroom 2009 Answer Key Work Energy And Power. Work energy and power the physics classroom 2009 page 12. The actual answers will be shown in brackets followed by an explanation.
Work energy and power the amount of work w done on an object by a given force can be calculated using the formula w f d cos where f is the force and d is the distance over which the force acts and θ is the angle between f and d. True a kg m 2 s 2 is a mass unit times a speed squared unit making it a kinetic energy unit and equivalent to a joule. The force of friction does work on the car thus changing the total mechanical energy.
Power is the rate at which work is done.
The use of the work energy theorem and a simple analysis will yield the solution to this problem. False work is not dependent on. The work energy equation can be written as follows. Physics 3 work energy power and momentum.
