A 1 000-kg sports car accelerates from zero to 28 m/s in 7.0 s.What is the average power delivered by the automobile engine?

Question

Quizplus · Accepted Answer

The average power can be calculated using the formula: Power = Work/Time. The work done is equal to the change in kinetic energy, which is (1/2)mv^2. Substituting the given values: (1/2)(1000 kg)(28 m/s)^2 = 392,000 J. The time is 7 s, so the power is 392,000 J / 7 s = 56,000 W or 56 kW.

A 1 000-Kg Sports Car Accelerates from Zero to 28