Two blocks, one of mass m1= kg and the other of mass m2= kg
are attached with a rope, as shown.
Between them is a spring compressed by a distance d= meters. The spring has a spring
constant k= N/m. Suddenly, the
rope breaks, and the spring quickly expands, pushing m1 to the left with speed v1 and m2 to the right
with speed v2. What are v1 and v2?