A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and 1/3 feet in diameter. If the engine is pushing at 2500 rpm, how fast is the vehicle moving in miles per hour? Round your answer to the nearest tenth of a mile per hour.
(hint: watch your measurements
1 answer
2500 * 2*2/14 rev/min * 7/3 * 12 * π in/rev * 60min/hr * 1mi/(12*5280)in = 59.5 mi/hr
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