Question

A person travels by car from one city to another. She drives for 27.7 min at 80.9 km/h, 12 min at 117 km/h, 46.3 min at 40.2 km/h, and spends 16.7 min along the way eating lunch and buying gas. Determine the distance between the cities along this route. Answer in units of km. 007 (part 2 of 2) 10.0 points Determine the average speed for the trip. Answer in units of km/h.

Answer 1

Answer:
`V_(avg)=53.60 km/h`

Step-by-step explanation:

Given

In first interval velocity=80.9 km/h for 27.7 min

In second interval=117 km/h for 12 min

In third interval=40.2 km/h for 46.3 min

Also she spends 16.7 min while eating and buying gas

`Distance =80.9* (27.7)/(60)+117* (12)/(60)+40.2* (46.3)/(60)`

Distance=91.761 m

`V_(avg)=(Displacement)/(total\ time)`

`V_(avg)=(91.761)/(27.7+12+46.3+16.7)* 60`

`V_(avg)=53.60 km/h`