A race car goes around a circular, level track with a diameter of 1.00 km at a constant speed of 90.0 km/h. What is the car's centripetal acceleration in m/s^2?

Answer 1

Ac = v^2/R

R = 500 meters
v = 90 km/h * 1000 meters/km * 1 hr/3600 s

Answer 2

20