Two 3.0 kg blocks on a level, frictionless surface are connected by a spring with spring c...

Two 3.0 kg blocks on a level, frictionless surface are connected by a spring with spring constant 1000 N/m, as shown in Figure 53. The left block is pushed by a horizontal force F. At t = 0 s, both blocks have velocity 3.2 m/s to the right. For the next second, the spring's compression is a constant 1.5 cm.

FIGURE 53

a. What is the velocity of the right block at t = 1.0 s?

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b. What is the magnitude of F during that 1.0 s interval?