An object of mass 30kg is in free fall in a vacuum where there is no air resistance. Determine the acceleration of the object. a. Determine the net force acting on the object and
b. calculate the acceleration of the object.

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Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f