BITSAT2012PhysicsWork, Power and EnergyActual
Which of the following must be known in order to determine the power output of an automobile?
Options
- AFinal velocity and height
- BMass and amount of work performed
- CForce exerted and distance of motion
- DWork performed and elapsed time of work
Correct answer
D. Work performed and elapsed time of work
Step-by-step solution
Power is defined as the rate of doing work. For the automobile, the power output is the amount of work done (overcoming friction) divided by the length of time in which the work was done.