honornoelle4249 honornoelle4249

06-07-2018
Physics

contestada

A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed

Respuesta :

CaioMaia CaioMaia

06-07-2018

Hi!

Sum of the distances: 53 + 90 = 143 km
Sum of the times: 4 + 3 = 7 hours

The average speed will be:
V = 143/7
V = 20.4 km/h

;)

Answer Link

Otras preguntas

Which of the following describes an advantage primary sources gave over secondary sources of a historian

What was Alice Hamilton contribution to science

SELECT ALL THAT APPLY!!Which of the following are the most common types of sonnets? Shakespearean Miltonian Petrarchan Spanish Elizabethan Victorian

________ are the primary means of authentication for a user's computer and other networks and servers to which the user may have access.

missing lenght on the right side. solve for c. 8", 6" =c

Suzanne needs material for her school project. She buys 4.75 yards of material at $5.37 a yard. What is the total cost of the material? Round to the nearest cen

The violent crimes of some group members inflate people's judgments of the crime rate of the entire group because the instances of violent crime are

Help!!!Lots of points

you should read greek mythology - what sentence is this

Find the number of distinguishable permutations of the letters in the word vaccination