A 8kg object is going a constant 4.7m/s. Then it experiences an impulse of -5kg*m/s, what is its new velocity?

If steel is more dense that lake water, why can a boat float

How will the system respond to a temperature increase?

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