and object Travels 120 km in 3 hours calculate its speed
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speed = distance / time...
here, distance = 120 km
= 120×1000m [ 1 km = 1000 m ]
= 120000m
and, time = 3 hrs
= 3× 3600sec. [ 1 hr= 3600 sec ]
= 10800 s.
then , speed = 120000÷ 10800
= 11.1 m/ s.
( SI unit of speed is m/ s .. that's why the conversion is done here ) ..
here, distance = 120 km
= 120×1000m [ 1 km = 1000 m ]
= 120000m
and, time = 3 hrs
= 3× 3600sec. [ 1 hr= 3600 sec ]
= 10800 s.
then , speed = 120000÷ 10800
= 11.1 m/ s.
( SI unit of speed is m/ s .. that's why the conversion is done here ) ..
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