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22 December, 05:44

An electron is accelerated uniformly at a rate of 25,000 km/s from rest in an accelerator, over a distance of 125 km. What is the final velocity of the electron?

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  1. 22 December, 06:02
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    Answer: 2500km/s

    Explanation:

    use equation wich conects distance and acceleration:

    S=Vst+at²/2

    Vs=0km/s (from rest)

    S=at²/2

    S2=at²

    t=√2S/a

    t=√2*125km/25000 km/s²

    t=0.1s

    Vf - -final velocity

    Vs- - start velocity

    a=Vf-Vs/t

    at=Vf-Vs

    Vs=0Km/s

    at=Vf

    25000Km/s*0.1s=Vf

    Vf=2500Km/s
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