A ball strikes a rod elastically and rod is smoothly hinged in vertical position. Which of the statement(s) is/are correct for the collision? (1)linear momentumbof system (ball+rod) is conserved. (2)angular momentum of system about hinged point A is conserved. (3)initial kinetic energy of the system is equal to finql kinetic energy if the system. (4)linear momentum of the ball is conserved.
