Which of the following describes the products of a chemical reaction? a. the original materials b. the chemicals on the right side of a chemical equation c. the chemicals on the left side of a chemical equation d. the substances that are changed

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.