According to newtons first law of motion, an object that is moving will change its motion only if what kind of forces act on it?

if they have a finite resultant

correct it is c.) b b

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.