Respuesta :

To find the time it took for the stone to travel 123 meters at a speed of 30 meters per second, you can use the formula:

Time = Distance / Speed

In this case, the distance is 123 meters, and the speed is 30 meters per second. Plugging these values into the formula, we get:

Time = 123 meters / 30 meters per second

Time = 4.1 seconds

So, the stone traveled for 4.1 seconds to cover a distance of 123 meters at a speed of 30 meters per second.