Projectile motion is a combination of which two types of motion?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.