“Relative” is an important word. In Fig. 9-72 attached, block L of mass m_L=1.00 kg and block R of mass m_R=0.500 kg are held in place with a compressed spring between them.When the blocks are released, the spring sends them sliding across a frictionless floor.(The spring has negligible mass and falls to the floor after the blocks leave it.) (a) If the spring gives block L a release speed of 1.20 m/s relative to the floor, how far does block R travel in the next 0.800 s? (b) If, instead, the spring gives block L a release speed of 1.20 m/s relative to the velocity that the spring gives block R, how far does block R travel in the next 0.800 s?