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..Car A is traveling east at 20 m/s toward an intersection.
As car A crosses the intersection, car B starts from rest 40 m north
of the intersection and moves south steadily gaining speed at
2.0 m/s². Six seconds after A crosses the intersection find
(a) the position of B relative to A,
(b) the velocity of B relative to A,
(c) theacceleration of B relative to A. Hint: Let the unit vectors i and j be toward the east and north, respectively, and express your answers
using i and j