Unformatted text preview: ( 29 ( 29 75 mph 2 h 150 miles d s t d st = = = = We can now use this distance to calculate the average speed between 9 am and noon. 150 miles 50 mph 3 h d s t = = = Note that this is not equal to the average of the two average speeds; that is, the average of 0 mph and 150 mph, or 75 mph. 14. We begin with our definition of average speed and manipulate it algebraically to find the unknown, time in this case. Then we substitute in the numerical values to obtain our answer. 500 miles 4 h 125 miles h d s t d t s = = = =...
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- Fall '02
- Scalar, Velocity, Miles per hour