MPH

Davy-dee

Hi,

I take part in 10 mile time trials but don't use a speedo, so i was wondering what the formula is for working out the average speed. i.e. 10 mile in 23.12.

Coldcorn

Miles / Time

Or use a online calculator - Here's one of thousands: http://www.arkansasrunner.com/calculators/mileperhr.htm

styxd

You'll probably cover it when you complete your GCSE physics.

Davy-dee

Thanks Coldcorn, that is a great tool.

What's the problem with styxd then????????

styxd

Sorry I was just having a laugh.

I cant believe you didnt know how to work out average speed though.

sfichele

miles=10
h=0;
m=23;
s = 12;
averageSpeedMPH = miles * 3600 / (3600 * h + 60 * m + s)
which in this case was 25.86 mph

NB: 60 s in a minute, 3600 s in hour

Davy-dee

Thank you sfichele. That's great.

styxd, no prob.

ShutUpLegs

styxd wrote:

Sorry I was just having a laugh.

I cant believe you didnt know how to work out average speed though.

It's nearly as hard as logging on to the internets

on the road

If you have a smartphone with gps then you can download an app that will record your speed, distance and average speed using gps, although some are less accurate than others.

Ankles50

If you covered 10miles in 23min 12 seconds
You need to get the time into a singular common number, so not longer minutes & seconds
23mins = 1380 seconds
Add togethr with the 12secs so total number of seconds to cover 10miles = 1392
10miles / 1392 seconds = 0.0071839
Multiply that by how many seconds in 1 hour, 60mins x 60 seconds = 3600
Gives you 25.86mph

malcolmfrost

Anyway you should be using kph. Rule 24 refers. http://www.velominati.com/the-rules/#24
So, you did an average of 41.89kph.

DavidJB

Buy a computer.

kentphil

years back I did an Excel spreadsheet that showed the average mph you need to do to achieve certain times between 20 and 30 minutes. I found it quite helpful, but its long lost now on an old pc I had.

Davy-dee

Thank you everyone for the help on this, I have a computer, but just needed the formula. I didn't think that you all would have so many different thoughts on the subject.

Thanks again.

Gabbo

Davy-dee wrote:

Hi,

I take part in 10 mile time trials but don't use a speedo, so i was wondering what the formula is for working out the average speed. i.e. 10 mile in 23.12.

From my experience in distance running, I always preferred meters per second. To do this, convert 10 miles into KM by multiplying 10 by 1.6. That will give you 16k or 16'000m of which then you divide by the time taken. If MPS then in a second format. Once you've found out how fast you travel MPS, you can multiply by 60 (how many meters per minute) then multiply again by 60 (how many meters per hour). Then you divide by 1600 (how many meters in a mile) and there is your speed in MPH. I think MPH will be more relevant to you than say a distant runner. Also to work out how many minutes per mile you do, you do 60/speed in MPH.