Springs: An object attached to a spring is pulled across a horizontal frictionless surface. If the force constant (spring constant) of the spring is 45 N/m and the spring is stretched by 0.88 m when the object is accelerating at 1.4 m/s2, what is the mass of the object?
A. 28 kg
B. 24 kg
C. 31 kg
D. 36 kg
Answer: A
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