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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.
800,000 seconds per minute Light travel approximately 3x10^8 ms-1 or approx 186,000 miles/second.
100 miles