#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.
slag noun [U]. âº âwaste âmaterial âproduced when âremoving âunwanted âsubstances from âmetals. (Definition of slag from the Cambridge Academic Content Dictionary Â© Cambridge University Press).lag noun [U] (WASTE). âº [U] âwaste âmaterial âproduced when âcoal is âdug from the âground, or a âsubstance âproduced by âmixing âchemicals with âmetal that has been âheated until it is âliquid in âorder to âremove âunwanted âsubstances from it See also slag heap. See also. slag heap.