Integrated Concepts - Simple Harmonic Motion, Collision (don't stick together) Keep 3 decimal places. The green vertical dashed line in the figures indicates the equilibrium position (x = 0). In Figure (a), a 4.23 kg block is attached to a spring with a force constant of 710.00 N/m and the spring is compressed to x = −A = −0.68 m. The block is then released and moves on a frictionless horizontal surface. (b) What is the speed of the Block when it reaches x1 = −0.204 m in Figure (b)? Enter a number m/s