I could really use some help with this extra credit problem, I really need the points on the final. Thanks!

2) A 10kg box is headed towards a horizontal spring with spring constant : 500% on a surface with #t- : 0.3. The surface underneath the spring, however: is frictionless, so the box feels no friction as long as it is in contact with the spring. When the box is 1111 away from the spring= it has a speed of 3% \\What is the maximum compression of the spring? Note that the box will not be moving at 3% when it initially contacts the spring:N since it will have slowed down due to friction. Solve using an energy-work approach. (5 points)