13. (Center of Mass and Linear Momentum) The mass mi =1.0 kg moving 5.0 m/s on a horizontal frictionless floor collides with 2.0 kg initially at rest. After the collision, m, moves at a 3.0 m/s and m, moves at a speed vaf along the directions with a speed v1 a mass m2 speed Vif shown in the figure. y i Find the speed v2r of m2 after the collision. Vif ii Is this collision elastic or not? Prove your answer. m, Vii ii Find the velocity of the center of mass of the system after collision. Give your answer in V2f Before coll. After coll. terms of unit vector notation. iv Find the impulse delivered to m during the collision. Give your answer in terms of unit vector notation. Answer: i) v2f 2.0 m/s ii) Inelastic iii) vcom, = 5/3 m/s i iv) = J = (-3.2 + 2.4j) kgm/s