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A 2.00-kg object is free to slide on a horizontal surface. The object is attached to...

A 2.00-kg object is free to slide on a horizontal surface. The object is attached to a spring of spring constant 300 N/ m, and the other end of the spring is attached to a wall. The object is pulled in the direction away from the wall until the spring is stretched 50.0 mm from its relaxed position. The object is not released from rest but is instead given an initial velocity of 2.50 m/s away from the wall. Ignore friction.   

Determine the value of ? in the equation for the object's position. Suppose that ? > 0.

Determine the value of ?i in the equation for the object's position. Suppose that ?? < ?i ? ?.

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