Determine the space mean speed for the data given in Problem 6-3 using Equation 6.5. Compare your answer with that obtained in Problem 6-3 for the space mean speed and discuss the results.
What will be an ideal response?
Equation 6.5 presents the following relationship:
First, the individual vehicle speeds must be converted to units of km/h and then
averaged to determine time mean speed, which is 64.4 km/h. Using Eq. 6.5,
The value for space mean speed found in Problem 6-3 is 38.7 mi/h, which is equal
to 62.3 km/h. Equation 6.5 predicted a value of 63.0 km/h, 0.7 km/h higher than
the space mean speed calculated directly from the data. This difference is
insignificant for most purposes.
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