By fps I assume it feet per second,hence
400fps=272.72727288 mph
The speed of a bullet can vary depending on the type of ammunition and firearm used. On average, bullets travel at speeds ranging from 900 feet per second (fps) to over 3,000 fps. Some high-powered rifles can propel bullets at speeds exceeding 4,000 fps.
The 747-400, which is the most common variant in service, has a high-subsonic cruise speed of Mach 0.85-0.855 = up to 570 mph or 920 km/h
To convert feet per second (fps) to joules, you need the mass of the projectile. The formula to calculate joules is 0.5 * mass * velocity^2. Without knowing the mass of the projectile, it is not possible to accurately calculate joules based solely on the velocity of 300 fps.
The impact of a collision at 60 mph is four times greater than at 30 mph.
The highest frames per second (fps) possible in video gaming is typically 240 fps.
3,600/5,280 gives you 1 fps in m.p.h Example: 52.8 f.p.s = 36 m.p.h.
280 x 3600/5280 = 190.91 mph
1 mph is 1.47 fps
62 mph = 90.933... fps
400 feet = 121.92 meters (rounded)
103 mph = 151.067 fps
299.93 fps.
36.66666666 fps
Mph stands for miles per hour, which is a measurement of speed.
450 FPS BB 400 FPS Pellets
400 km in what time is missing
km is a measurement of distance and mph is a measure of velocity. However 1 mph =1.609344 kph (km per hour) so 400 mph = 400 * 1.609344 = 643.7376 kph