A parachutist slows when his parachute opens. Where does the kinetic energy go? a
It is transformed to elastic potential energy
b
It is transformed to gravitational potential energy
c
It is transformed to heat.
d
It is destroyed.

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.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.