How do I find mph if my time is in seconds?

Question

Let's just say that I have a time of 2 seconds that it took me to travel 50 feet- how would I convert this to mph?

Answer 1

D = distance in feet

T = time in seconds

S = speed in miles per hour



S = (D/5280)/(T/3600)

= (D/T)*(3600/5280)

= (15/22)D/T



You can use this formula in a spreadsheet to generate a table with the

ranges of times and distances of interest to you. For instance, in

Excel, a formula like



=15/22*$B3/C$2



can be used to generate a table like



1 2 3 4 5 6 7

-------------------------------------------------------------

1 0.682 0.341 0.227 0.170 0.136 0.114 0.097

2 1.364 0.682 0.455 0.341 0.273 0.227 0.195

3 2.045 1.023 0.682 0.511 0.409 0.341 0.292

4 2.727 1.364 0.909 0.682 0.545 0.455 0.390

5 3.409 1.705 1.136 0.852 0.682 0.568 0.487

6 4.091 2.045 1.364 1.023 0.818 0.682 0.584

7 4.773 2.386 1.591 1.193 0.955 0.795 0.682

8 5.455 2.727 1.818 1.364 1.091 0.909 0.779

9 6.136 3.068 2.045 1.534 1.227 1.023 0.877

10 6.818 3.409 2.273 1.705 1.364 1.136 0.974

11 7.500 3.750 2.500 1.875 1.500 1.250 1.071

12 8.182 4.091 2.727 2.045 1.636 1.364 1.169

13 8.864 4.432 2.955 2.216 1.773 1.477 1.266

14 9.545 4.773 3.182 2.386 1.909 1.591 1.364

15 10.227 5.114 3.409 2.557 2.045 1.705 1.461

16 10.909 5.455 3.636 2.727 2.182 1.818 1.558



where the numbers across the top are seconds and the numbers at the

left are feet. Going 11 feet in 3 seconds comes out to 2.5 miles per

hour.

Answer 2

Hi



There are 3600 seconds in an hour therefore 2 seconds is 1/1800th of an hour (3600 divided by 2), and there are 5280 feet in a statute mile, therefore 50 feet is 0.0095 miles (50 divided by 5280), which would equate to around 17.1 miles per hour (1800 multiplied by 0.0095).



Cheers



Geordie

Answer 3

One way is you can type into google 25 ft/s to mph



To calculate it yourself you need to know some conversion factors:



5280 feet per mile

60 seconds per minute

60 minutes per hour



To convert from ft/sec to mph you do a couple conversion steps:



50 ft divided by 2 seconds = 25 ft/sec



First: (25 ft/sec) x (1 mile/5280 ft)



In your calculator take 25 and divide by 5280, this gives you .00473 miles/sec because feet divided by feet cancels out



Then take the number you get and convert seconds to hours:



(.00473 miles/sec) x (60 sec/1 min) x (60 min/1 hr)



So multiply your speed in miles per second by 60 two times and you get your answer:



17.045 mph



or if you look up the conversion from ft/sec to mph (1 ft/sec = 0.681818182 mph) then you can find it like this:



(25 ft/sec) x (0.6818 mph/ 1 ft/sec)



gives you the same answer

Answer 4

50 feet diveded by 5280 feet equals miles=.0094696969696 miles times 3600 seconds dived by 2 seconds = 17.045 mph



Max Bear gets a thumbs down from me!!!!! For showing his azzzzzzzzzzz!!!!!!

Answer 5

you have to convert your time to HOURS

e.g. mph

so you have 2 seconds



how many periods of 2 seconds are there in an hour?



then multiply by 50 feet



and divide by 5280



and you have your answer



all the best

Answer 6

well theres 60 seconds in a minute 60 minutes in an hour and you can look up how many feet in a mile and figure it out.

Answer 7

well, for every hour, theres 60 minutes, and for every minute theres sixty seconds. And for every mile, theres 5280 feet. so, hopefully this info will be of some help to you. good luck

Answer 8

velocity is distance divided by employing time. If the area is a million mile and the time is T seconds, then the time in hours is T/3600, and the fee is velocity = (a million mile)/(T/3600 hours) = 3600/T

Answer 9

speed =distance/time



would be alot easier if it was all metric :D

Answer 10

Do your own homework ding-a-ling.