A motorist starts from rest at point A on a circular entrance ramp when t = 0, increase 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 100 kph at point C, determine (a) the speed at point B, (b) the magnitude of the total acceleration when t = 20 s. %3D -100 m- 150 m

A motorist starts from rest at point A on a circular entrance ramp when t = 0, increase 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 100 kph at point C, determine (a) the speed at point B, (b) the magnitude of the total acceleration when t = 20 s. %3D -100 m- 150 m