madisonskye8346 madisonskye8346

07-06-2018
Physics

contestada

A car drives 40 miles on local roads at 20 mph, and 180 miles on the highway at 60 mph, what is the average speed of the entire trip?

Respuesta :

17-06-2018

40 miles at 20 mph takes 2 hours
180 miles at 60 mph takes 3 hours

Average speed = Total distance / Total time
= (40 + 180) / (2 + 3)
= 220 / 5
= 44

The correct answer is 44 m/s

Answer Link

Otras preguntas

Historically, the Amish people have forbidden the use of modern conveniences; many consider ownership of an automobile a(n)___ of community law. A. ambience B.

The term suffrage refers to the A.freedom to make ones voice heard. B.Soviet labor camps C.Extermination of Jews under Hitler D.right to vote

What is 3/15 in a decimal

The first immigrants to the United States were mainly from England, Scotland, Ireland, Germany, and A. Russia. B. Italy. C. Scandinavia. D. Greece.

The perimeter of a rectangle is 256 m. The length is 16 m greater than the width. What is the width of the rectangle?

What is meant by an economic boom or boom period? It is a year or more of high unemployment. It is six months of recession. It is a period of rapid expansion of

Which verb agrees in number with its subject? From a cord around the coach's neck __________ two silver whistles. A. dangle B. has dangled C. dangles D. is dang

Two objects were lifted by a machine. one object had a mass of 2 kilograms and was lifted at the speed of 2 m/s. the other had a mass of 4 kilograms and was li

What must be added to water in order to change state from liquid to a gas?

A construction crane's cable lifts a 49.5-kg box upward with an acceleration of 1.30 m/s2. Find the tension in the rope. answer in newtons