Question: Two masses my = 1.23 kg and my = 1.14 kg move towards each other on a frictionless car track. my has speed uj = 2.61 m/s to the right while my has a speed u2 = 2.85 m/s to the left (Figure 1). They collide. After the collision m2 moves to the right with a speed v2 = 2.65 m/s. U1 U2 m1 m2 Figure 1: Diagrammatic representation of two masses, my and my, moving towards each other on a frictionless track at speeds of uj to the right and u2 to the left, respectively. Part 1) Before the collision what is the velocity of the centre of mass of the system? U.com m/s to the right Note: Give a negative answer if it is to the left. Part 2) What is the velocity of the centre of mass after the collision? Ucom m/s to the right Note: Give a negative answer if it is to the left. Part 3) What is the final velocity of mi? 21 = m/s to the right Note: Give a negative answer if it is to the left. Check Incorrect answer. Note: Your answers should be correct to 3 significant figures. Incorrect answer. Note: Your answers should be correct to 3 significant figures. Feedback for Part 1) The velocity of the centre of mass is given by: Zimivi Ucm Ei mi m14 m2 Substitute into this equation, except u2 is negative as it is to the left