valeriesylke valeriesylke

06-06-2017
Physics

contestada

A train travels 57 kilometers in 3 hours, and then 87 kilometers in 2 hours. What is its average speed? km/hr

Respuesta :

budwilkins budwilkins

01-07-2017

Average speed (v) = total distance(d) / total time (t)
d = 57 + 87km = 144km
t = 2 + 3hrs = 5hrs
v = d÷t = 144÷5 = 28.8km/hr

Answer Link

Otras preguntas

All of the following are powers and functions assigned to the legislative branch EXCEPT: A. coin money B. declare war C. make treaties D. borrow money

Lauren is warming up before softball practice. Which of these activities would provide the best dynamic stretch to prepare her for hitting?

How was the Roman Empire different after Constantine''s recognition of Christianity?

Founded in 1967, ASEAN did little to foster economic cooperation until _______ proposed a free-trade area in 1991. A. Malaysia B. Thailand C. Singapore D. Indon

If two runners take the same amount of time to run a mile, they have the same __________. A. acceleration B. force C. mass D. velocity

For most Latin American countries, the 1800s were the Era of __________. A. Independence B. Colonization C. Columbian Exchange D. Exploration

Solve for x in the following problem. d=t/x

The Diary of Anne Frank describes the life of a Jewish girl during World War I I. True False

Washington's main objective as president of the United States was to establish respect for the office of the presidency. True False

At a game booth, a student gets a box of candy as the prize for winning a game. The boxes come in four colors: white, red, green, and blue. There are 10 boxes o