5. A block of mass m] = 1.9 kg moving to the right with a speed of 4.8 m/s on a frictionless track collides with a massless spring attached to a block of mass m2 = 2.6 kg moving left with a speed of -2.7 m/s. The spring constant is 640 N/m. 3) When In] is moving to the right with a speed of 3 m/s, determine the speed of ml. 13) Determine the distance the spring is compressed. c) Is mechanical energy conserved? What types of energy are involved here and what is happening to the energy during the collision? (1) Explain the concept of impulse