The Fishercats (Manchester, NH).

]]>First, crop the image until only the relevant material is visible. Next, find the width and length of the blur, in pixels. The width is from (47, 7) to (51, 17) and the length is from (7, 19) to (86, 6), according to the highlighted dots on the attached image. Thus, the width is 2sqrt(29) pixels and the length is sqrt(6410) pixels. Since the circumference of a normal baseball is about 9 inches, its diameter is 9/pi inches. Proportionally, (9/pi)/2sqrt(29)=L/sqrt(6410). Solving for L gives about 21.2957 inches.

Image: http://img402.imageshack.us/img402/5466/img0350l.jpg

Since this image exposure is 1/80 seconds, the ball traveled L distance in that 1/80 seconds. For ease of comparison, this needs to be converted to miles per hour. The units inches/second can be converted to miles/hour by multiplying by (1 foot/ 12 inches) * (1 mile/ 5280 feet) * (60 seconds/ 1 minute) * (60 minutes/ 1 hour) or 5/88. So, 21.2957 inches/(1/80) seconds * 5/88 is about 96.7988 miles/hour. Due to the precision of the data, the most precise answer is 97 miles/hour.

Thomas Murphy

MSSM Student, Senior 2011-2012