A race car rounds one end of a speedway. This end of the track is a turn with a radius r of approximately 187 ft. If the track is assumed to be completely flat and the race car is traveling at a constant 68.00 mi/h around the turn, what is the face car's centripetal (radial) acceleration ac? Macmillan Learning ac fu/s 2 Convert this result to SI units. m/s 2 & TOOLS x10 What Is one force responsIvie for the centripetal acceleration in this case? friction O gravity O weight O normal To keep from skidding into the wall on the outside of the turn, what is the minimum coefficient of static friction As between the race car's tires and the track? HS =