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Home > PC3 > Chapter 2 > Lesson 2.2.4 > Problem 2-101


​Tom and Ray are cruising the Massachusetts Turnpike in Tom’s ’79 Fiat Spyder, enjoying the beautiful fall colors for which New England is so justly famed. Ray notes that at mph the tachometer reads rpm and wonders how many feet the car travels in the time the engine makes one revolution. What is the answer? 

Use dimensional analysis. Recall that there are feet in mile.