An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 1000-m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change?
A. 0.25
B. 0.50
C. 1.00
D. 2.00
E. 4.00
Answer: D
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