Two blocks of mass m1=1.52 kg and m2=6.60 kg are connected by a spring of spring constant 360 N/m. Both blocks rest on a level surface. The coefficient of kinetic friction between block m1 and the surface is 0.349, while there is no friction between block m2 and the surface. If a force of F=22.6 N pulls block m2 to the right what is the acceleration of the blocks? How much does the string stretch from it's rest length?