An object is placed between infinity and pole of a convex mirror. Draw a ray diagram and tabulate the position, the
relative size and the nature of the image formed

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.