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March 30, 2017

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A car travels along a straight stretch of road.
It proceeds for 15 mi at 55 mi/h, then 29 mi
at 43 mi/h, and finally 37.9 mi at 33.7 mi/h.
What is the car’s average velocity during
the entire trip?
Answer in units of mi/h

  • physics - ,

    Average velocity = (Total miles)/(Total time)

    The total time is 15/55 + 29/43 + 37.9/33.7 = 2.072 hours

    The total miles is 15 + 29 + 37.9 = 81.9 mi

    Finish the calculation.

  • physics - ,

    39.527

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