A car travels 72 km in an hour,find its speed in meter per second
We know that 1 km is equal to 1000 meters and 1 hour is equal to 3600 seconds.
Therefore, to find the speed in meters per second, we first need to convert the distance from kilometers to meters:
72 km = 72 * 1000 = 72000 meters
Now, we need to convert the time from hours to seconds:
1 hour = 3600 seconds
Now we can calculate the speed in meters per second:
Speed = Distance / Time
Speed = 72000 meters / 3600 seconds
Speed = 20 meters per second
Therefore, the car's speed is 20 meters per second.