To convert 21 meters per second to mph, you can use the following conversion factors: 1 meter per second is approximately equal to 2.237 mph. Therefore, 21 meters per second is approximately 47.25 mph.
Just divide the distance (in meters) by the time (in seconds).
21 square feet.
21 x 21 = 441 square feet
7 yards is equal to 21 feet.
840 feet/40 seconds = 21 feet per second.840 feet/40 seconds = 21 feet per second.840 feet/40 seconds = 21 feet per second.840 feet/40 seconds = 21 feet per second.
A person falling from a height of 25 feet will reach a speed of approximately 31 feet per second (or 21 miles per hour) when they hit the ground. This speed is reached due to the acceleration caused by gravity.
To convert 21 meters per second to mph, you can use the following conversion factors: 1 meter per second is approximately equal to 2.237 mph. Therefore, 21 meters per second is approximately 47.25 mph.
30.8 feet in one second.
21 knots is 24.17 mph
21 knots=24.1663684 miles per hour
21 inches divided by 12 inches per foot = 1.75 feet
There is a lot of variation, but you can use 9 feet per story as a rough guide so 21 stories is 189 feet.
To convert inches to feet just divide by 12 (since there are 12 inches per foot) -21 / 12 = 1.75 feet
21 knots is roughly 25 miles-per-hour.
Around 10^21 per second, when the amount made per day is the average, 75kg.
(12-ft x 21-ft) / (9 square feet per square yard) = 28 square yards