Nine km per hour equates to 0.15 km per minute.
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-- The speed is 888/9 meters per minute, 51/3 kilometers per hour,or 128 kilometers per day.-- We don't know the velocity, because we have no information aboutthe direction of the speed.
1 hour = 60 minutes → 9 per hour = 9 per 60 minutes therefore divide by 60 to give you how many per minute: 9 per 60 minutes = 9/60 per 60/60 minutes = 3/20 per minute.
There are 1.609344 kilometres in one mile. Therefore, 9 miles per hour is equal to 9 x 1.609344 = 14.484096 kilometres per hour.
100 meters/9 seconds = 40 kilometers per hour = 24.85 miles per hour (rounded)
4 miles in 36 minutes is a 9 minute per mile pace. So the question becomes, how many 9 minute groups are in an hour. 60/9 = 6.66 miles per hour. 4 miles in 40 minutes = 6 miles per hour. 4 miles in 24 minutes = 10 miles per hour and so on.