A Spring (K = 600 N/m) Is Placed in a Vertical

Multiple Choice

A spring (k = 600 N/m) is placed in a vertical position with its lower end supported by a horizontal surface. A 2.0-kg block that is initially 0.40 m above the upper end of the spring is dropped from rest onto the spring. What is the kinetic energy of the block at the instant it has fallen 0.50 m (compressing the spring 0.10 m) ?

A) 5.3 J
B) 6.8 J
C) 6.3 J
D) 5.8 J
E) 6.5 J