To determine the velocity of the car, we can use the formula for kinetic energy:
Kinetic energy (KE) = (1/2) * mass * velocity^2
Given that the car has a mass of 2000 kg and a kinetic energy of 80,000 J, we can rearrange the formula to solve for velocity:
80,000 = (1/2) * 2000 * velocity^2
Dividing both sides by (1/2) * 2000:
velocity^2 = 80,000 / (1/2) * 2000 velocity^2 = 80,000 / 1000 velocity^2 = 80
Taking the square root of both sides to solve for velocity:
velocity = √80 velocity ≈ 8.94 m/s
Therefore, the velocity of the car is approximately 8.94 m/s.