A chunk of clay of mass m1 = 0.48 kg is thrown in the x direction with an initial velocity of v = 29 m/s. It collides with a box of m2 = 4.2 kg initially at rest and sticks. a) Assume the box had an initial velocity of vb in the positive x direction. Write an expression for the final velocity of the system.  b) If the box has an initial velocity of vb = 2.2 m/s, what is the final velocity of the system in meters per second?

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