Saturday, November 1, 2014

Miles Per Hour with Toy Cars (Converting Units w/ Dimensional Analysis)


How Fast is a Toy Car Really Traveling?






To examine this question and teach dimensional analysis we converted feet per second to miles per hour using a toy car.


Step 1: Using a stop watch, yard stick and a windup toy car we calculated the average feet per second to be

 

22.5ft/6.8sec

Step 2: We set up the problem

 

Step 3: We used conversion techniques to translate ft/sec to miles/hour.     

 

This little car was traveling approximately 2.26 miles/hour

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