| | | # Average Speed Formula
Asked Apr 15, 2007, 06:09 PM
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** 23 Answers** | How would one write a formula to find the average speed if one knows the distance traveled and the rate of speed for each portion of the trip?
20 miles at m speed
40 miles at n speed |
23 Answers
| Full Member | |
Apr 15, 2007, 06:54 PM
| | Here's a hint: The units for average speed is m/h (miles/hour[or any other unit of time, really]), right? So... get the total miles over the total time. (How? It's *your* homework :) )
What? You don't know the hours? If I went at a speed of 60 miles/hour for 60 miles, how long did I travel? If you said 1 hour you are right. Use the same logic.
Good luck. | | | New Member | |
Apr 16, 2007, 03:34 AM
| | I don't know the speed nor the time. All I am given is the distance. | | | Uber Member | |
Apr 16, 2007, 03:45 AM
| | You need to work out total distance divided by total time. You have plenty enough information to do that. You ARE given the speed...
Speed = distance/time will giv eyou the answer. | | | Guest | |
Apr 8, 2008, 06:32 PM
| | average speed = delta distance divided by delta time
vav = dd / dt
ps. D = delta | | | New Member | |
May 7, 2008, 04:05 AM
| | Is the answer for the average speed like this:
3nm/(n + 2m) ?
Thanks. Originally Posted by **ljackson30** How would one write a formula to find the average speed if one knows the distance traveled and the rate of speed for each portion of the trip?
20 miles at m speed
40 miles at n speed | | | New Member | |
Aug 19, 2009, 12:32 PM
| | 60
------
2m+n
Because
You know that the formual for average speed?
So
You can get
20+40
--------
t1+t2
But you don't know t1 and t2
To find time
The formula is d/r
Now you can substitute
20+40
-------------
20/m+ 40/n
Which is 60/20n+40m | | | New Member | |
Aug 19, 2009, 12:34 PM
| |
Sorry I got a mistake which is the first part
Just ignore below this
60
------
2m+n | | | New Member | |
Oct 18, 2009, 09:38 PM
| | ans : if the distances are considered as d1 and d2 and speed as s1 and s2 then average speed =
= (d1 + d2 ) / ( d1 / s1 + d2/s2 )
if d1 = d2 i.e. over same distance then
avg speed = 2 S1* S2 / (S1 + S2) | | | New Member | |
Nov 17, 2009, 06:00 AM
| |
100m (Distance) 44 sec (time)=Speed | | | New Member | |
Nov 17, 2009, 06:01 AM
| |
Distance 100m time 44 sec what is the speed | | | New Member | |
Nov 17, 2009, 06:05 AM
| | 100m distance time 44 seconds what is the speed | | | Uber Member | |
Nov 17, 2009, 06:19 AM
| | average speed = total distance/total time | | | Uber Member | |
Nov 17, 2009, 06:19 AM
| |
You should have created your own thread.
Use: | | | New Member | |
Jan 7, 2010, 10:11 PM
| | average speed=total distance:time | | | New Member | |
Jul 7, 2010, 03:41 AM
| | Hey guys! What if there is 3 distances? For example, Vi = 6miles/no time Vii = 45miles/1hr and Viii = 1.5miles/30mins? Should I say that the time would be 2hrs or 1hr and 30mins? For a total of 90mins? Thanks! | | | Expert | |
Jul 7, 2010, 07:07 AM
| | Originally Posted by **Lihim.88** Hey guys! What if there is 3 distances? For example, Vi = 6miles/no time Vii = 45miles/1hr and Viii = 1.5miles/30mins? Should I say that the time would be 2hrs or 1hr and 30mins? For a total of 90mins? Thanks! Please do not double post questions. See: https://www.askmehelpdesk.com/mathem...ed-486088.html | | | New Member | |
Sep 16, 2010, 04:13 PM
| | Hehehe I'm so happy to find they missing formulas... :) | | | New Member | |
Oct 18, 2010, 07:10 PM
| | | | | New Member | |
Nov 23, 2010, 05:17 AM
| | An aircraft travels 2150 nuatical miles in 2 hours 30 minutes. What is the average speed of the aircraft? | | Question Tools | Search this Question | | | ##
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