A 20 Kg Block on a Horizontal Frictionless Surface Is Attached

A 2.0 kg block on a horizontal frictionless surface is attached to a spring whose force constant is 590 N/m.The block is pulled from its equilibrium position at x = 0 m to a displacement x = +0.080 m and is released from rest.The block then executes simple harmonic motion along the x-axis (horizontal) .The velocity of the block at time t = 0.10 s is closest to:

A) -1 m/s
B) 1 m/s
C) 0.2 m/s
D) -0.2 m/s
E) zero

Correct Answer:

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