(Answered) A 20 kg box slides 40 m down the frictionless ramp shown in

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A 20 kg box slides 4.0 m down the frictionless ramp shown in the figure(Figure 1) , then collides with a spring whose spring constant is 210 N/m .

1) What is the maximum compression of the spring?

2) At what compression of the spring does the box have its maximum speed?

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