A Spring with a Spring Constant K = 1600 N/m

Multiple Choice

A spring with a spring constant k = 1600 N/m is at rest on the bottom of an inclined plane. A 7.0-kg block slides down the plane and makes contact with the spring at point A as shown. After contact, the spring is compressed to point B, 0.20 m from point A, where the speed of the block is zero m/s. What was the speed of the block just before contact with the spring?

A) 3.2 m/s
B) 12 m/s
C) 2.4 m/s
D) 9.1 m/s
E) 4.2 m/s