1. The problem statement, all variables and given/known data 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, determine (a) the speed at point B, (b) the magnitude of the total acceleration when t=15s. The entrance ramp is a quarter circle with radius 450 ft. Point B is at the point where the car stops moving in a circular path and begins to travel straight down the highway for 300 ft. when it reaches point C. 2. Relevant equations s=s.+v.t+.5at^2 at=dv/dt et an=((v^2)*t)/r 3. The attempt at a solution vc=95.333 ft/s s=225pi stot=1006.8583 I have no idea how to complete this problem. If there was a time given to us I could figure out the at, and then use that to find the v and an. I feel like I'm not given enough information but I know thats wrong. If anyone could just put me in the right direction it would be greatly appreciated.