A 25kg object moving at 15m/s East collides with a 15kg object that is standing still. They stick together and keep moving. What is the final velocity?​

explanation:

newton's third law, for every action there is an equal and opposite reaction.

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.