Please help very stuck

Hint 1 Hint 2 An object of mass 9 kg is released at point A, slides to the bottom of the 30 incline, then collides with a horizontal massless spring, compressing it a maximum distance of 0.75 m. The spring constant is 525 N/m, the height of the incline is 2.0 m, and the horizontal surface is frictionless. A 2.0 m 30 Image Description A block is shown at the top of a downward sloping ramp. The ramp makes an angle of 30 degrees with the horizontal. The block is a vertical distance of 2.0 meters above the ground. To the right of the ramp, on the horizontal ground, is a horizontal spring. The far end of the spring is attached to a wall. a. What is the speed of the object at the bottom of the incline? m/s b. What is the work of friction on the object while it is on the incline? Wj = c. The spring recoils and sends the object back toward the incline. What is the speed of the object when it reaches the base of the incline? U = m / s d. What vertical distance does it move back up the incline? h = m