a new cannon was being developed in a science lab. the instructor wanted to do some testing of the cannon's ability to launch objects with different masses. the instructor used tennis balls and filled them with lead, rocks, and styrofoam. the fourth tennis ball had nothing in it. the instructor fired each tennis ball with the same speed and measured the kinetic energy of each over a period of one second.

Aregular polygon has angkes of size 150° each.how many side has the polygon

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

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery