2.This is because there are 1000 meters in a kilometer and 3600 seconds in an hour。3.Therefore.1 m/s equals 1 * 3.6 km/h.which simplifies to 3.6 km/h。4.Alternatively.the conversion can be expressed as 1 m/s multiplied by (1 km/1000 m) multiplied by (3600 s/1 h).resulting in 3.6 km/h。