Steel Rebar. Reinforcing bar, or rebar, is a common steel bar that is hot rolled and is used widely in the construction industry, especially for concrete reinforcement.
These flows generally occur during periods of intense rainfall or rapid snow melt. They usually start on steep hillsides as shallow landslides that liquefy and accelerate to speeds that are typically about 10 miles per hour, but can exceed 35 miles per hour. The consistency of debris flows ranges from watery mud to thick, rocky mud that can carry large items such as boulders, trees, and cars.
http://www.wonderquest.com/falling-raind... The average snowflake falls at a speed of 3.1 miles per hour. (5 kilometers) http://www.suite101.com/article.cfm/scie... Hail can falls much faster, because its diameter can be larger.Its fallspeed is approximately given by 1.4 D0.8 at sea level, the exact relationship depends on hail density and shape.he following is: It depends on the size and weight of the raindrop how fast it falls: the heavier, the faster. At sea level, a large raindrop about 5 millimeters across (house-fly size) falls at the rate of 9 meters per second (20 miles per hour).