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two locomotives start at the SAME place but Locomotive A gets a half hour head start. Locomotive A travels at 100 km/hr and Locomotive B travels at 140 km/hr.Find the time elapsed and how far each traveled before they meet.

  • Physics - ,

    v(A) • (t+0.5) =v(B) •t
    0.5•v(A) = (v(B) –v(A)) •t
    t= 0.5•v(A) /(v(B) –v(A)) =
    =0.5•100/40=1.25 h
    s=v(B) •t=140•1.25=175 km

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