menu
QAmmunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Register
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed
asked
Jul 25, 2019
92.4k
views
3
votes
A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed
Physics
high-school
OriolJ
asked
by
OriolJ
7.9k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
6
votes
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
;)
Majid Basirati
answered
Jul 30, 2019
by
Majid Basirati
8.4k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.5m
questions
12.2m
answers
Other Questions
At sea level, water boils at 100 degrees celcius and methane boiled at -161 degrees celcius. Which of these substances has a stronger force of attraction between its particles? Explain your answer
Physical properties of minerals graphic organizer
A snowball is launched horizontally from the top of a building at v = 16.9 m/s. If it lands d = 44 meters from the bottom, how high (in m) was the building?
What type of rock is the Haystack rock (igneous, Metamorphic, or Sedimentary)
How many light sources do you know Pls list them
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search QAmmunity.org