posted by Bob .
An Indy car with a speed of 120 km/h goes around a level, circular track with a radius of 1 km. What is the centripetal acceleration of the car (in m/s/s)?
a = v²/R,
v = 120 km/h = 120000/3600 m/s=33.3 m/s, R = 1000 m
a =1.35•10^7 m/s²