If a projectile is fired at an angle of 30 degree to the horizontal, then the vertical component of its velocity at the highest point is maximum true or false
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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

If anyone who can me with this hw? i would really appreciate it

What equation is used to calculate the weight of an object on a plant ?