A Block Attached to an Ideal Spring of Spring Constant

Multiple Choice

A block attached to an ideal spring of spring constant 15 N/m executes simple harmonic motion on a frictionless horizontal surface.At time t = 0 s,the block has a displacement of -0.90 m, a velocity of -0.80 m/s, and an acceleration of +2.9 m/s² .The mass of the block is closest to

A) 2.3 kg
B) 2.6 kg
C) 4.7 kg
D) 9.4 kg