# Consider the following statements A and B and identify the correct answer: (A): In an elastic collision , if a body suffers a head on collision with another of same mass at rest, the first body comes to rest while the other starts moving with the velocity of the first one . (B): Two bodies of equal mass suffering a head on elastic collision merely exchanges their velcities :

(a) both A and B are true.

(b) both A and B are false

(c) A is true but B is false

(d) A is false but B is true.

(A) both A and B are true.
Hence A is the correct answer.