A 2,000-kilogram sports car accelerates at a rate of 30 meters per second squared. The velocity of the car is v=a⁢t, where a is acceleration in meters per second squared, and t is time in seconds. The kinetic energy of the car is K⁢E=12⁢m⁢v2, where m is the mass in kilograms. Which function represents the kinetic energy of the car after accelerating for t seconds?