A 20-Kg Block Sliding on a Frictionless Horizontal Surface Is Attached

Multiple Choice

A 2.0-kg block sliding on a frictionless horizontal surface is attached to one end of a horizontal spring (k = 600 N/m) which has its other end fixed. The speed of the block when the spring is extended 20 cm is equal to 3.0 m/s. What is the maximum speed of this block as it oscillates?

A) 4.6 m/s
B) 5.3 m/s
C) 5.7 m/s
D) 4.9 m/s
E) 3.5 m/s