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a firecracker explodes into two equal parts the velocity of one part is 20m/s what is the velocity of the other piece |
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Answer» If the firecracker will EXPLODES into TWO equal parts their MASSES will be same on both the sides.m = m₁ = m₂=> Initial momentum = 0=> Final momentum = 0=> P = 0=> mv₁ + mv₂ = 0=> m(v₁ + v₂) = 0=> v₁ + v₂ = 0=> v₁ = -v₂ => 20 = -v₂=> v₂ = -20 m/sHence, the Option C) -20 m/s is the correct answer. |
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