If the mass of the actor is 60 kg and the mass of the sand bag is 80 kg, what is the magnitude of acceleration of the actor?

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Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

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