A0.16-kg block on a horizontal frictionless surface is attached to an ideal spring whose force constant (spring constant) is 360 n/m. the block is pulled from its equilibrium position at x = 0.000 m to a position x = +0.080 m and is released from rest. the block then executes simple harmonic motion along the horizontal x-axis. when the position is x = -0.037 m, what is the acceleration of the block? 8