Block 1, of mass m1 = 3.70 kg , moves along a frictionless air track with speed v1 = 23.0 m/s . It collides with block 2, of mass m2 = 23.0 kg , which was initially at rest. The blocks stick together after the collision. (a) Find the magnitude pi of the total initial momentum of the two-block system. (b) Find vf, the magnitude of the final velocity of the two-block system. (c) What is the change ΔK=Kfinal−Kinitial in the two-block system's kinetic energy due to the collision?

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