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Physics

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How much work is needed to stop a 20g bullet moving with a speed of 150ms-1

  • Physics -

    W=ΔKE= mv²/2 =0.02•150²/2=…

  • Physics -

    m-20g-0.02kg
    v-150ms/1
    k.e-1/2mv2
    k.e-1/2*0.02*150*150
    1/2 to decimal-
    0.5*0.02*150*150
    225joules

  • Physics -

    225j

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