A car of mass m=2150 kg drives on a horizontal, circular racetrack. The racetrack has a radius of r=151.8 m. The coefficient of static friction between the car's tires and the racetrack is μ=0.565. (The input below will accept answers with no more than 1% variation from the correct value.) The car travels at a constant speed ∣v∣=16.7m/s. What is the magnitude of the friction force on the car? ∣∣Ff∣∣= N The car travels at ∣v∣=16.7m/s.What is the maximum possible instantaneous rate of change of the car's speed?