#1: Kinetic energy drops are fairly predictable. You can assume, roughly, that an arrowâs kinetic energy is reduced by around 3-4% for every 10 yards it travels. So if we have 100 ft-lb initial energy (at 0 yards), at 10 yards you can expect roughly 97-97 ft-lbs. of KE. This is a good rough rule to remember in case you need to do some quick on-the-spot kinetic energy calculations in the field.
The definition of crag is the neck or throat area, or a rugged rock that sticks out from a mass of rocks. An example of a crag is an animal's throat. An example of a crag is a sharp, large rock poking out from a mountain.
Mountain Definition. A mountain is a natural elevation of the earthâs surface rising more or less abruptly to a summit, and attaining an altitude greater than that of a hill, usually greater than 2000 ft. Related to Mountain: Pyramidal Peak, Mountain Ranges, Mountain Pass.he most common way a mountain is formed is through plate tectonics. The Earth has massive plates that float. These plates can move under and over each other. When one plate moves under another the plate, the other plate rises up to form a mountain. After thousands of years, they mountains can get very high.