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Kenitic energy derivation

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Kenitic energy derivation

    • Posted by Krishna Dhakad 7 years, 3 months ago

    CBSE > Class 09 > Science
    • 3 answers

    📕Queen 📕Queen 7 years, 3 months ago

    May this help you toooo

    0Thank You

    📕Queen 📕Queen 7 years, 3 months ago

    1.Let us consider a body of mass 'm' placed on frictoinless surface. 2.Let initial velocity be 'u' & final velocity be 'v'. 3.By applying force 'f' body gets displaced at distance 's' 4.Now according to Newton 2 law of motion :- F=ma 5.Now according to uniformaccelarated motion : V2-U2=2as V2-U2/2a=s 6.Now according to defination of work done W=ma×v2-u2/2a W=1/2m(v2-u2) But here workdone is due to motion of the body hence w=Ek Ek=1/2m(v2-u2) If initial velocity is zero i.e.u=0 Ek =1/2mv2

    1Thank You

    Shivani Singh 5 years, 11 months ago

    W=fs V2 - u2= 2as, s=v2 /va F=ma, w=ma, v2/2a W=KE=mv2/2=1/2 mv2 Hope it will help you?

    2Thank You

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