2. The Figure below shows a partial profile of a roller-coaster ride. Friction and air resistance are negligible. The speed at the top of the hill (point A) is 7.00 m/s. [4] a) Determine the speed of the coaster at position B. 38 m C 12 m yc (Note: The horizontal and vertical scales are different.) b) Due to some constraint, the allowed speed at C must be at most 22 m/s. What is the minimum height ye