70 ft per second = approx 76.8 km per hour.
216000 mph
240 ft
1,126 ft/s
245 ft in 2.59 seconds = 94.595 ft per second
861 ft/s * 3600 s/hr / 5280 ft/mi = 587.045 mph
a crossbow travels at 436 ft per second.
One mile per minute = 60 miles per hour = 88 ft per second
2100 ft in 11 seconds is 190.90 ft per second. Traveling that distance in 1 second you are going 130.15 mph.
9.81 meters per second = 32.18 feet per second.
da speed of light blad
So what does acceleration mean. Let's break it down. It is a gain of speed. Your speed here is in ft per second. Now think of it as a gain of 32ft per second with every second that passes. I.e. Something at rest, after 1 second it will be going 32ft per sec. After 2 secs it will be going 64 ft per second and so on.