A1900kg car starts from rest and drives around a flat 65-m-diameter circular track. the forward force provided by the car's drive wheels is a constant 1300 n. what is the magnitude of the car's acceleration at t=13s? what is the direction of the car's acceleration at t=13s ? give the direction as an angle from the r-axis. if the car has rubber tires and the track is concrete, at what time does the car begin to slide out of the circle?