posted by Dan .
A 1900 car starts from rest and drives around a flat 50--diameter circular track. The forward force provided by the car's drive wheels is a constant 1300 .
A) What is the magnitude of the car's acceleration at ?
B) What is the direction of the car's acceleration at ? Give the direction as an angle from the r-axis.
C) If the car has rubber tires and the track is concrete, at what time does the car begin to slide out of the circle?