Consider two bodies on a flat surface that undergo an inelastic collision. Mass 1 (1) has a speed of 1 before the collision while mass 2 is at rest. Mass 1 and mass 2 move at a speed of 2 after the collision. a.) Express 2 in terms of 1 , 2, 1 using the conservation of linear momentum. b.) Now consider an elastic collision for the bodies. Find an expression for 2f in terms of the masses and the final velocities 1i, 2f using the conservation of mechanical energy