At the instant shown, cars A and B travel at speeds of 70 mi/h and 50 mi/h, respectively. If B is increasing its speed by 1100 mi/h, while A maintains a constant speed, determine the magnitude of the velocity in mi/h of B with respect to A. Car B moves along a curve having a radius of curvature of 0.7 mi. VA = 70 mi/h 50 mi/h 30 00

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