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Physics

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A 20 N force acts on a 10 kg object parallel to the object's displacement. If the force acts for 32 m, what is the final kinetic energy, in J, of the object assuming it starts from rest?

  • Physics - ,

    a=F/m = 20/10=2 m/s².
    s=(v²-vₒ²)/2a.
    vₒ=0
    v²= 2as.
    KE=mv²/2= m2as/2=mas=10•2•32=640 J

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