You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between
your feet and the ice. A friend throws you a ball of mass 0.400 kg that is traveling horizontally at 11.0 m/s. Your mass is 75.0 kg. a. If you catch the ball, with what speed do you and the ball move afterwards?
b. If the ball hits you and bounces off your chest, so that afterwards it is moving horizontally at 7.80m/s in the opposite direction, what is your speed after the collision?
Potential energy is when a object is not in motion and the ball is sitting on a shelf not being thrown around or rolling. kinetic energy is when a obeject is in motion and moving.
They cant occupy the same box in the periodic table because each atom has a certain number of protons which is the atomic number and no two atoms have the same amount of protons.