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the height of an object thrown on the surface of a certin planet is s(t)=80t-16t^2. what is the velocity? what is the acceleration? when is the velocity zero?

  • Calculus - ,

    v(t) = s'(t) = 80-32t
    a(t) = v'(t) = -32

    when is velocity zero?
    when is 80-32t = 0 ?
    solve for t

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