To find the average speed of an object, you can use the formula:
Average speed = Total distance / Total time
In this case, the object moves 10 kilometers in 30 minutes. To calculate the average speed, you need to make sure that the time and distance are in the same units. Since the speed is usually expressed in kilometers per hour (km/h), we need to convert the time to hours:
30 minutes = 30 minutes / 60 minutes per hour = 0.5 hours
Now, plug the values into the formula:
Average speed = 10 km / 0.5 hours = 20 km/h
So, the average speed of the object is 20 kilometers per hour.