Answer:Mudflows are the fastest type of mass movement, with speeds of up to 100 km per hour.
Explanation:Earth flows typically move at slow to moderate rates ranging from 10−10 m/s to 10−3 m/s; in a few instances, earth flows have surged briefly to rates ranging from 10−2 m/s to about 10−1 m/s. The speed of the mass wasting event that is solifluction is slow.