Please help me I can’t think of what it is

Explanation:

Acceleration in a mass/spring system is 0 at the equilibrium position, and this is where the velocity is at a maximum.

Velocity in a mass/spring system is 0 at the amplitude of the motion and this is where the acceleration is at a maximum.

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.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.