Physics

A body P of mass 5kg moving with a velocity of 30M/s collids with another body q moving in opposite direction with a velocity of 20m/s.If the bodies now move in the direction of P at velocity 10m/s.calculate the mass of q

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  1. Assuming inelastic
    m1v1 + m2v2 = (m1+m2)vf
    5(30) + m2(-20) = (30+m2)10
    Solve for m2

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  2. 0.15m/s

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  3. m1v1=m2v2
    5×30=m2×20
    m2=150/20
    m2=7.5kg

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  4. Give me the answer

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  5. 10

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  6. 10kg

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  7. I dont know

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  8. 18 kg

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  9. m1×v1+m2×v2 =(m1+m2)
    5×30+q+20=(q+5)
    150+q×20=q+5=10
    collect like terms
    150+20+10=2q+5
    180=2q×5
    180/10=10/10
    q=18 kg

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