12-229. Cars A and B are traveling around the circular race track. At the instant shown, A has a speed of 90 ft/s and is increasing its speed at the rate of 15 ft/s², whereas B has a speed of 105 ft/s and is decreasing its speed at 25 ft/s². Determine the relative velocity and relative acceleration of car A with respect to car B at this instant. A. Express both vectors as x,y vector components. Ans: VA VA (x,y) = (-37.5,-90.93), (x,y) = (10.69, 16.7) S A = 300 ft 60⁰° TB=250 ft

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