A block of mass 3.1 kg is sitting on a frictionless ramp with a spring at the bottom that has a spring constant of 490 N/m (refer to the figure). The angle of the ramp with respect to the horizontal is 29°. The block, starting from rest, slides down the ramp a distance 79 cm before hitting the spring. How far, in centimeters, is the spring compressed as the block comes to momentary rest?

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