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A 2.00×10−2-kg bullet strikes a 0.280-kg block attached to a fixed horizontal spring whose spring constant...

A 2.00×10−2-kg bullet strikes a 0.280-kg block attached to a fixed horizontal spring whose spring constant is 3000 N/m and sets it into oscillation with an amplitude of 17.0 cm .

What was the initial speed of the bullet if the two objects move together after impact?

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