At some point the angular velocity of the ball had to have been zero. At what angle from its original orientation did this occur and how long did it take.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

conservation of mass

mass before something happens = mass afterwards