Question

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 45.0 min at 70.0 km/h, 9.0 min at 55.0 km/h, and 40.0 min at 60.0 km/h and spends 15.0 min eating lunch and buying gas.

(a) Determine the average speed for the trip.

 

(b) Determine the distance between the initial and final cities along the route.

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Kinematics

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