1km per hour is 1/3 of 3km per hour, so the answer is 1/3 of an hour or 20 minutes.
3km is always 3km it makes no difference if you run or walk
3 hours.
10 minutes on average
It depends at what speed you drive
For a normally fit and heathly person, about 10 minutes - you should be able to walk 3km in an hour, 1km in 20 minutes and so half a KM in about 10. If it's raining probably longer though
At 3 kph, it will take one hour. At 30 kph, it will take six minutes.
By unit of length and distance and conversion ,we can say that 1 km=1000 m 3km=3000 m
99 ten millionths of a second. It would take sound 8.85 seconds.
A human walks about 3/5 km/hr. So 2.4km/ 3km/hr= 0.8hr= 48 minutes or 2.4km/ 5km/hr= 0.48hr= 29 minutes It would take about 30-45 minutes to walk 2.4 km.
About 3km- and about 5 times a week.
depends on how fast you walk