Question

A person travels by car from one city to another with differetn constant speeds between pairs of cities. She drives for 15.0 min at 95.0 km/h, 5.0 min at 60.0 km/h, and 30.0 min at 35.0 km/h and spends 25.0 min eating lunch and buying gas.

Determine the average speed for the trip.

Determine the distance between the initial and final cities along the routes.

Answer 1

Solution-

The average speed can be found by the formula,

Substitute the values for the total distance

Therefore, the average speed for the trip is 37 km/hr

The distance covered in the trip is given by,

Therefore, the distance traveled on the trip is 46.25 km.