I need solve this assignment physics

Problem 1 (30 points) Consider two objects of masses m1= 9.004 kg and m2 = 3.703 kg. The first mass (mj) is traveling along the negative y-axis at 49.72 km/hr and strikes the second stationary mass m2, locking the two masses together. a) (5 Points) What is the velocity of the first mass before the collision? V my > m/s b) (3 Points) What is the velocity of the second mass before the collision? V m2 = m/s e) (4 Points) Choose the correct answer: f) (4 Points) What is the total initial kinetic energy of the two masses? Ki= g) (5 Points) What is the total final kinetic energy of the two masses? Kf= h) (3 Points) How much of the mechanical energy is lost due to this collision? AEint=