Problem 1(15pts): The rollercoaster track below is formed out of a semicircular hill and dip, each of radius 10 m and with their centers at the same height. A 500 kg rollercoaster car coasts without friction on this section of track, and has a speed of 5 m/s at the top of the initial hill (point A). 10m a. (5pts) At point A, how large is the normal force on the car from the track? b.(5pts) At point B, the bottom of the hill, how fast is the car going?.. C.(5pts) What is the net force on the car at point B