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physics

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A 800. kg car starts from rest and accelerates uniformly to 19.0 m/s in 22.0 s. Assume that air resistance remains constant at 340 N during this time. Find (b) the average power developed by the engine

  • physics - ,

    v=v₀+a•t => a=(v-v₀)/t
    m•a=F-F(resist),
    F= m•a+F(resist)=
    =m• (v-v₀)/t + F(resist)=
    =800•(22-0)/22 +340 =…

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