An object hits a wall and undergoes these two conditions upon collision: 1. Situation 1- the object bounces off the wall. 2. Situation 2- the object sticks to
the wall upon impact. Compare the magnitude or amount of the object's change
in momentum, impulse, and impact force in these two situations. Explain your
answers. *

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.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.