Physics, 07.07.2019 21:20 Dhejxbdbbxbdbbx
A4-kg object falls vertically a distance of 5 m. its potential energy has changed by approximately how much? a. it has increased by 200 j. b. it has increased by 20 j. c. it has decreased by 20 j. d. it has decreased by 200 j.
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Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec
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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
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A4-kg object falls vertically a distance of 5 m. its potential energy has changed by approximately h...
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