The Second Crusade took place from 1145 until 1149 and the route was from England to the Holy Land. The distance traveled was more than 5,082.5 kilometers, or 3,158.11908 miles.
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The speed of light is 186,282 miles per second.
Divide the 90 miles by 3600. That's the amount of miles you travel in a second. Then convert this from miles to feet.
0.033 miles per second or about 174.24 feet per second.
At 550 miles per hour, it would be .15 miles per second.
Ten seconds.