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A 4-g bullet is fired into a 1.4-kg block that is resting on a table. After impact, the block with the embedded bullet slides 8 cm across the table before coming to rest again. The coefficient of kinetic friction between the block and the surface of the table is 0.71. What was the initial speed of the bullet? (Practise how to derive an algebraic expression for the speed of the bullet before calculating the final result.)

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