To determine the speed of the object in kilometers per hour, we need to convert the distance traveled and the time interval to kilometers and hours, respectively.
Given: Distance = 3 meters Time = 1 second
To convert the distance from meters to kilometers, divide by 1000 since there are 1000 meters in a kilometer:
Distance in kilometers = 3 meters / 1000 = 0.003 kilometers
To convert the time from seconds to hours, divide by 3600 since there are 3600 seconds in an hour:
Time in hours = 1 second / 3600 = 0.0002778 hours
Now, we can calculate the speed (velocity) in kilometers per hour:
Speed = Distance / Time
Speed = 0.003 kilometers / 0.0002778 hours
Calculating the division:
Speed ≈ 10.8 kilometers per hour
Therefore, the object was traveling at approximately 10.8 kilometers per hour if it traveled three meters during one second at a constant speed.