1.61 km = 1 mi The speed of light is 3.0 x 108 m/s. What is the speed of light in mph and how many orders of magnitude faster is light traveling than a car driving 50 mph? A. 1.12x107 mph, order of magnitude: 6 B. 1.12x10¹⁰ mph, order of magnitude: 9 C. 6.71 x 10¹¹ mph, order of magnitude: 10 D. 6.71 x 108 mph, order of magnitude: 7 E. 6.71x105 mph, order of magnitude: 4

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