Sediment or sedimentation is the term used for solid organic matter transported by wind, water or glacial erosion. Usually, Sediment is formed by weathering or rock. In time, this sediments will be accumulated and formed in a place in which it will stay.
This would mean that it went 5 km for 10 seconds
5 x 10= 50km during that period of time
Yes, because it is found and created naturally