Final answer:
The kinetic energy of a 2000 kg bus traveling at twice its original speed would be four times greater due to the velocity being squared in the kinetic energy formula.
Step-by-step explanation:
If a 2000 kg bus is traveling at twice its original speed, its kinetic energy would change significantly. The formula for kinetic energy is KE = 1/2 m v^2, where m is mass and v is velocity. If the velocity is doubled, the kinetic energy becomes four times greater since velocity is squared in the equation. Therefore, for a 2000 kg bus moving at twice its original speed, the kinetic energy would be four times greater.