This problem involves power and energy. The approach is simple and straightforward.

Work:

$\overline{){\mathbf{W}}{\mathbf{=}}{\mathbf{P}}{\mathbf{t}}}$

An older-model car accelerates from 0 to speed v in a time interval of Δt. A newer, more powerful sports car accelerates from 0 to 2v in the same time period. Assuming the energy coming from the engine appears only as kinetic energy of the cars, compare the power of the two cars.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Net Work & Work-Energy Theorem concept. You can view video lessons to learn Net Work & Work-Energy Theorem. Or if you need more Net Work & Work-Energy Theorem practice, you can also practice Net Work & Work-Energy Theorem practice problems.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Physics for Scientists and Engineers - Serway Calc 9th Edition. You can also practice Physics for Scientists and Engineers - Serway Calc 9th Edition practice problems.