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Physics, 27.08.2020 07:01 rose888829
2. What is the kinetic energy of a 25 kg object traveling at 15 m/s?
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Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.
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2. What is the kinetic energy of a 25 kg object traveling at 15 m/s?...
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