A 020-Kg Object Is Attached to a Spring with Spring Constant

Multiple Choice

A 0.20-kg object is attached to a spring with spring constant k = 10 N/m and moves with simple harmonic motion over a horizontal, frictionless surface. At the instant that it is displaced from equilibrium by -0.060 m, what is its acceleration?

A) "360 m/s²"
B) "-30 m/s²"
C) "3.0 m/s²"
D) "0.18 m/s²"