A15.0 kg block at rest on a horizontal frictionless surface is attached to a very light ideal spring of force constant 450 n/m. the other end of the spring is attached to a fixed wall. a lump of putty travels horizontally with a speed of 8.00 m/s towards the block from the side directly opposite the spring. the putty strikes and sticks to the block. what is the maximum distance the spring is compressed after the impact? be sure to identify the conservation law you use to analyze each stage of this process and to tell why you use it.