Physics Work,Power & Energy Level: Misc Level

An object with a mass of 0.75 kg is dropped from rest from a height h=3.0 m above the top of a vertical spring that has spring constant k= 300 N/m.Draw a picture' a) Find the speed of the object when the spring is compressed 0.2 m. b) Find the compression of the spring when the object reaches its lowest point. c) After leaving the spring, how high above the top of the relaxed spring does the object rise before coming to rest.Explain the reasoning used for this question.