The kinetic energy of a car is 8 × 10⁶ J as it travels along a horizontal road. How much power is required to stop the car in 10 s?

Question

Quizplus · Accepted Answer

To stop the car, all of its kinetic energy needs to be dissipated within 10 s, which means that the power required is:
Power = Kinetic Energy / time
Power = (8 × 10^16 J) / (10 s)
Power = 8 × 10^15 W
Therefore, the correct answer is choice C.

The Kinetic Energy of a Car Is 8 × 106

The Kinetic Energy of a Car Is 8 × 10⁶