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A $2\text{ kg}$ mass is attached to a horizontally-oriented spring ($k=2{,}000\text{ N/m}$), and set into simple harmonic motion with the amplitude of $10\text{ cm}$.

Which one of the following is closest to the speed at which the mass crosses through equilibrium?

A

$2.2\text{ m/s}$

B

$3.2\text{ m/s}$

C

$10\text{ m/s}$

D

$20\text{ m/s}$

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