Since one hour is 3600 seconds (60 minutes per hour times 60 seconds per minute), 12 seconds is 12 over 3600th of an hour, or 0.03333 of an hour. In 12 seconds, at 495360 feet per hour, you would travel about 1651 (495360 times 12 divided by 3600) feet.
4,950 feet.
~3 seconds
1,531.2 feet in 12 seconds @87 mph
87 miles per hour = 1,531.2 feet per 12 seconds
68.2 miles per hour.
The average rate of movement, for example the number of feet traveled in a certain number of seconds, or the number of miles traveled in a certain length of time.
The average rate of movement, for example the number of feet traveled in a certain number of seconds, or the number of miles traveled in a certain length of time.
Multiply by 20 to get how far is traveled in a minute, which gets 1210 feet per minute. Then multiply by 60 to get how far is traveled in an hour, which gets 72600 feet per hour. Divide by 5280 to convert feet to miles, which gets 13.75 miles per hour.
speed = distance / time speed = 8133 / 80 101.66 feet per second.
If the rock falls at 96 feet per second then multiply that by two to find out how far the rock traveled in two seconds which is 192 feet. Subtract 192 from 640 and the answer is 448. Therefore, the rock is 448 feet high after two seconds.
For the average skydiver, the first 15 seconds would cover 2,000 feet. So jumping from 7,000 feet would put him at 5,000 feet in 15 seconds.
1 mile = 5,280 ft 87 miles in 1 hour = 87(5,280 ft) in 3,600 seconds = 459,360 ft. That is 127.6 ft in 1 second. So in 12 seconds the distance traveled will be 1,531.2 ft (12 x 127.6)