What kind of energy is possessed by the following?
(a) A stone kept on roof-top.
(b) A running car.
(c) Water stored in the reservoir of a dam.
(d) A compressed spring
(e) A stretched rubber band.
(a) Potential energy, since it only posses height and no motion.
(b) Kinetic Energy, since the car only poses velocity and not the height.
(c) Potential Energy, since the water is at a state of rest with a certain height.
(d) Potential Energy, since the spring do not contains any velocity but the shape is changed.
(e) Potential Energy, since there is no motion but change in shape.