A vehicle travels approximately 1.5 ft per second for each mile per hour. 25 x 1.5 = 37.5. Add to that the average human response time to react to stimuli and apply the brake (1.5 sec again) = 56.25 ft before the vehicle begins to stop.
Braking on most surfaces slows you 15 feet per second, per second of braking.
37.5 fps to 0 fps = 2.5 sec to stop
(37.5 fps/2) x 2.5 sec = 46.875 ft braking distance +56.25 reaction distance
= 103.125 ft between recognition of a danger and your vehicle stopping.
Add to that the braking efficiency of the vehicle. You can also account for the drag coefficient of the pavement and grade (.7 to .8)but that is usually a negligible amount unless you are doing serious traffic crash reconstructions.
At 1000 mph, there are approximately 1467 feet per second.
2,200 feet per second is 1,500 mph
55 mph = 80.6666 feet per second
350 feet per second = 238.64 mph
15 mph = 22 feet per second
40 mph = about 58.6 feet per second.
69 mph is 101.2 feet per second.
To convert mph to feet per second, you can use the conversion factor of 1 mph = 1.46667 feet per second. Therefore, 74.0625 mph is equivalent to about 108.67917 feet per second.
125 mph = 183.33 feet per second.
132 feet per second at 90 mph.
1.46 feet per second at 1 mph.
(19 (mph) * 1760 * 3) / 3600 = 27.86 feet per second (approx) > mph>yards per hour>feet per hour>feet per second