Must use only the work-energy theorem, conservation of energy, and/or conservation ofmomentum for this assignment. A small wooden block with mass 0.800 kg is suspended from the lower end of a light cord that is 1.60m long. The block is initially at rest. A bullet with mass 12.0 g is fired at the block with a horizontal velocity v_0. The bullet strikes the block and becomes embedded in it. After the collision the combined object swings on the end of the cord. When the block has risen a vertical height of 0.800 m, the tension in the cord is 4.80 N. What was the initial speed v_0 of the bullet?

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