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Need confirmation of my own answer please ?

An isolated system consists of two objects, A and B, moving without friction along a horizontal x-axis. The figure shows the initial masses and speeds of these objects. mu m 5-1 5.00 m 3-1 lI- II 2.00 kg 3.0:] kg I A B The two objects then suffer an inelastic collision, after which they remain stuck together, traveling as a single composite object, confined to the :r-axis. None of these objects rotates. What is the difference between the final kinetic energy of the composite object and the total initial kinetic energy of A and B? Give you answer by entering a number, specified to an appropriate number of significant figures, into the empty box. Final kinetic energy initial kinetic energy = J