Yes I have that total time=21.12s, I calculated that. But I don't know how to find the time at B, when the car stops moving in a circular motion and begins to move linearly.
Homework Statement
A motorist starts from rest at point A on a circular entrance ramp when t=0, increases the speed of her automobile at a constant rate and enters the highway at point B. Knowing that her speed continues to increase at the same rate until it reaches 65 mi/h at point C...