70 mph = 369,600 feet per hour.
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There are 1,609.34 meters in a mile. Therefore, one mile per second is equivalent to 1,609.34 meters per second.
1 mph = 1.609344 km/h (According to Google Calculator)
To convert miles per hour to meters per second, you can use the conversion factor: 1 mile per hour is approximately equal to 0.44704 meters per second. Therefore, 345.48 miles per hour is approximately 154.73 meters per second.
You must average at least 9.23 miles per hour to achieve that time.
5 miles per hour is approximately 2.24 meters per second.