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Find an expression for the bullet’s speed.?

A bullet of mass m is fired into a block of mass M that is at rest. The block, with the bullet embedded, slides distance d across a horizontal surface. The coefficient of kinetic friction is mu_k_ .Find an expression for the bullet’s speed Vbulletuseing the variables: d mu_k_ m M
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3 Answers

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Dr. Juanita Wolff

Feb 20, 2025

(K + U)initial – NC = (K + U)final, NC being non-conservative forces. μ is kinetic frictioninitially, K = mv^2/2 and U = 0, NC = (m + M)gμfinally, K = 0 and U = 0 mv^2/2 + 0 – (m + M)gμ = 0 + 0mv^2 = 2(m + M)gμv^2 = (2(m + M)gμ) / mv = √[(2(m + M)gμ) / m]... Show More
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Dr. Juanita Wolff

Feb 20, 2025

Correct answer is here: https://answers.yahoo.com/question/index?qid=20121…... Show More
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