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4.20-Thepositionof a particle is given byr=30t i-20t2 j +4.0 k mwhere t is in seconds and the coefficients have the proper units for r to be in metres.(a) Find the v and a of the particle? (b) What is the magnitude and direction ofvelocity of the particle at t = 2.0 s ? |
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Answer» Thanks |
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