Which of the following statements is true?* A. Weight and mass are the same thing.
B. Weight is the gravitational force an object experiences due to its mass and
gravitational acceleration.
C. The weight of an object on Earth is less than the weight of the same object on the
moon, but the mass remains the same.
D. All of the above statements are true.

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