If you run 800ft. in 1 minute. What would be your approximate speed in mph?
95669
800 ft    1 mi      60 min\n------ x ------   x ------ = 9.09...\n1 min     5280 ft    1 hr
685470
the speed = distance/time
219576
To travel 3 miles in 30 minutes, you need to walk at a speed of 6 miles per hour.  Average walking speed is about 4.5 feet/second, or about 3 mph, so you'd have to walk roughly twice as fast as you would normally, which is really more of a run I suppose.
963172
average speed =total distance/total time\n1.\ntotal distance=2km\ntotal time=1/2hr\naverage speed =4km/hr\n2.\ntotal distance=360km\ntotal time=5hr\naverage speed =360/5=72km/hr\nthanks & good luck
742754
First convert miles to feet:\n\n(90 miles)(5280 ft / 1 mile) = 475,200 feet per hour.\n\nNow that you have a rate, you can find the distance traveled over a period of time:\n\n(475,200 feet)/(1 hour) = (60 feet / ? hours)\n\nSolving for the unknown, you get:\n\n60/475200 = 0.000126262 hours.\n\nNow convert into a more convenient time measurement, like seconds:\n\n(0.000126262 hours)(60 min / 1 hour)(60 sec / 1 min) =\n\n0.45 seconds\n\n--------------\n\nHope this helps
861588
Average speed = (8+8.5)/2=16.5/2 = 8.25 m/s\nTotal distance = 8.25x99=816.75m\nTime taken for 1st Lap = 816.75/(2x8) = 51 sec\nTime taken for 2nd Lap = 816.75/(2x8.5) = 48 sec
864791
A.) 3.02891 seconds\nB.) 290.1 m/s\n\nTrust me... =)
455311
at 53 sec (assuming you're a guy) you should try and do some 600s and 800s.  having a good 800 makes your finish stronger- you lose a little bit of power, but you can keep your power very well.  world class 800 runners can do 45-46 sec. 400s.  you should try to shoot for 2:10-2:20 in the 800 and see how it works
940227
40 yards = 120 feet = 1,440 inches\n1,440 inches / 4.3 seconds = 335 inches per second (approx.)\n1,440 inches / 4.4 seconds = 327 inches per second (approx.)\nSo I would say that it is approximately 8 inches in difference between the two runners.
918281
Let's assume your range of vision was 0.2 miles infront of you, and 0.1 miles behind with the mirror.  (I'm pulling these numbers out of my behind.)\n\nAt t=0, the car was at position x = -0.1 relative to you.\nAt t=5 seconds, it was at x = 0.2.\n\nSo the speed (relative to you) is 0.3 miles / 5 seconds = 0.06 miles per second = 216 miles per hour.  Since you were doing 85 mph, it real speed was 301 mph.\n\nAre you sure this took only 5 seconds?  I picked some pretty small numbers for the range of vision and this still results in some wicked speed.
2556
You're really close! The answer is actually 1:03:11. You were off one minute because you forgot to borrow a minute from the 34 so you could subtract the seconds.
30694
20m/s.\nbecause the total time is 5s. and by defn of average speed it is the ratio of total distance travelled to total time taken i.e 100/5 = 20m/s
683205
About 1000 feet per sec.
924906
200 m in 10.70\n\n= 200/1000 Km in 10.70 seconds\n\n= 0.2 Km in 10.70 second \n\n= 0.2/10.7 Km in 1 sec\n\nand since 1 hr has 3600 seconds\n\n(0.2/10.7)*3600 Km / hour = 67.29 Km / Hour or 67.29 KPH
995779
To all those who answered 90 mph - BE MORE CAREFUL!\n\nMath Teacher
810450
1.\nConvert 80 mph to feet per second:  80 * 5280 / 3600 = 117.333\n\na = (Vf - Vo) / t  = (117.333 - 0) / 6 = 19.556 ft /sec^2\n\n2.  \n\nConvert 70 mph to feet per second: 70 * 5280 / 3600 = 102.667\n\nVf^2 = V0^2 - 2*a*d\n\n0 = 102.667^2 - 2*a*157\n\n10540.44 = 314 a\n\na = 33.57 ft / sec^2\n\n\n3.  a = (Vf - Vo) / t = 80 / 5 = 16 ft/sec^2\n\nV = 80 - 16t\n\nIntegrate that equation from 0 to 5\n\n80t - 8t^2 = 80 * 5 - 8*25 = 200 ft
26755
186,000 miles a second vs 220 some odd miles per second?  yeah, it is\n\nedit- \nok, to the person below, yes, I meant per hour, and was lowballing it... \n\nspeed of sound at sea level = 340.29 m / s