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Question
A motorcycle was used to clock a baseball in 1940.  The motorcycle passed the pitcher as he was starting the windup. The motorcycle had a 10 feet head start.  The baseball won by 3 feet.

Speed of motorcycle- 85 mph.

Calculate speed of baseball.

The pitcher's mound is 60.5 feet from home plate.
1 mile = 5280 feet

The ball travels 60.5 feet in the time it takes the motorcycle to travel 60.5 - 13 = 47.5 feet.

47.5 feet × mile/5280 feet × 1 hour/85 miles = 1.06×10⁻⁴ hour
It takes the motorcycle 1.06×10⁻⁴ hour to travel 47.5 feet.

60.5 feet/(1.06×10⁻⁴ hour) × mile/5280 feet ≅ 108.3 miles/hour
The baseball travels 108.3 miles per hour.

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#### Janet Yang

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I can answer questions in Algebra, Basic Math, Calculus, Differential Equations, Geometry, Number Theory, and Word Problems. I would not feel comfortable answering questions in Probability and Statistics or Topology because I have not studied these in depth.

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I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

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