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Q. A 2.0- box rests on a plank that is inclined at an angle of 65 above the horizontal. The upper end of the box is attached to a spring with a force constant of 360. If the coefficient of static friction between the box and the plank is 0.26, what is the maximum amount the spring can be stretched and the box remain at rest?

Q. A force of 6.00 N acts on a 3.00-kg object for 10.0 s. What is the object's change in momentum? What is its change in velocity?

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