a person travels by car from one city to another with different constant speed between pairs of cities.she travels for 30.0min at 80km/h,12min at 100km/h,45min at 40km/h and spends 15min 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 routes.

Question

anonymous · Answer

Get the distances from km/hr times time in hours.
Add the total driving times and divide that into total distance to get average speed.

If the cities are in a straight line, add the distances to get final-initial city disaance spacing.