A person travels by car from one city to another with differentconstant speeds b

Question

A person travels by car from one city to another with differentconstant speeds between pairs of cities. She drives for55.0 min at 95.0km/h, 7.0 min at 65.0 km/h and 40.0 min at60.0 km/h, and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip inkm/hr.
(b) Determine the distance between the initial and final citiesalong this route in km. (a) Determine the average speed for the trip inkm/hr.
(b) Determine the distance between the initial and final citiesalong this route in km.

Explanation / Answer

Average speed = (95*55/60 +65*7/60 +60*40/60)*60/127 = 63.62km/h

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