Help Plaes!
which object has the least amount of kinetic energy? a spinning top, golf all on a grass covered hill in sunlight, a person filling a glass of water from the faucet to overflowing, a roller coaster train half way down the first hill of a roaller coaster track?

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?