01-07-2017
Physics

contestada

A train travels 80 kilometers in 3 hours , and 84 kilometers in 2 hours .What is the average speed ?

Respuesta :

budwilkins budwilkins

01-07-2017

Average speed(v) = total distance(d) / total time(t), because d=v×t
So total d = 80 + 84km = 164km
Total t = 3 + 2hours = 5hrs
v = d / t = 164km / 5hrs = 32.8 km/hr

Answer Link

Otras preguntas

What is the sum of two numbers is 30. The sum of the greater number and three times lesser number is 53

Ordering and patterning build on the skills of: A. graphing. B. measuring. C. comparing. D. seriation.

What unresolved conflict was made worse by adding more territory to the United States in the early to mid-1800s?

Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person’s diet should include a source of vitamin

Proper storage of food will help to maintain food quality, flavor, and nutritional value.

During dance practice, Sasha drank 21⁄2 pints of water, and on the way home she drank 1⁄2 cup of water. How much water did she drink in total?

How should a well-crafted business report begin?

Which of the following is true about acids? a. Acids give foods a bitter taste. b. Aqueous solutions of acids conduct electricity. c. Acids have a pH value g

sal bought a house for $78,524.60. twelve years later she sold the house for 2 and 3/4 as much what was the sale price of the house.

Both weathering and erosion produce a. sediment c. mass movement b. carbon dioxide d. igneous rocks