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7 April, 11:20

How much work must be done to accelerate an 8.5*10^5 kg train from a) 10m/s to 15m/s b) 15m/s to 20m/s and c) to an Initial stop of 20m/s

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  1. 7 April, 11:50
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    W = ΔE = 1/2 m (v₂ - v₁) ²

    W work

    E kinetic energy

    m mass

    v₂ final velocity

    v₁ initial velocity
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