A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the total acceleration of the car is 2.5 m/s2 53° north of west. Which of the following is correct?
A. R = 0.29 km, and the car's speed is increasing.
B. R = 0.23 km, and the car's speed is decreasing.
C. R = 0.23 km, and the car's speed is increasing.
D. R = 0.29 km, and the car's speed is decreasing.
E. R = 0.29 km, and the car's speed is constant.
Answer: A
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