What was the speed of the bullet at collision

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Q. A 12.0 g bullet is fired horizontally into a 106 g wooden block that is at first at rest on a frictionless horizontal surface and connected to a spring having spring constant 143 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 70-cm, what was the speed of the bullet at collision with the block?

Reference no: EM1388619

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