A ball with a mass of 2.20 kg is moving with velocity (5.00Î – 1.60ĵ) m/s. (HINT: v² = V · V.) (a) What is the ball's kinetic energy (in J) at this velocity? J (b) Find the net work (in J) on the ball if its velocity changes to (8.001 + 4.00ĵ) m/s. J

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Chapter1: Units, Trigonometry. And Vectors
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A ball with a mass of 2.20 kg is moving with velocity (5.00î – 1.60ĵ) m/s. (HINT: v²
(a) What is the ball's kinetic energy (in J) at this velocity?
J
= V. • v.)
(b) Find the net work (in J) on the ball if its velocity changes to (8.00î + 4.00ĵ) m/s.
J
Transcribed Image Text:A ball with a mass of 2.20 kg is moving with velocity (5.00î – 1.60ĵ) m/s. (HINT: v² (a) What is the ball's kinetic energy (in J) at this velocity? J = V. • v.) (b) Find the net work (in J) on the ball if its velocity changes to (8.00î + 4.00ĵ) m/s. J
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