The recoil of a shotgun can be significant. Suppose a 3.3-kg shotgun is held tightly by an arm and shoulder with a combined mass of 15.0 kg. When the gun fires a projectile with a mass of 0.038 kg and a speed of 385 m/s, what is the recoil velocity of the shotgun and arm-shoulder combination?

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Q: - ヘ How?

A: Theory :

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A: when a power of 10 is reduced the decimal is shifted to right of the number.

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A: Given data, ω⇀=-ωcosl,0,ωsinlr⇀=0,η,ζ

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