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The velocity of a particle moving in the xy plane is given by ,v=(5t-4.5t^2)i+8.3j with in...

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Physics

The velocity of a particle moving in the xy plane is given by,v=(5t-4.5t^2)i+8.3j with in meters per second and t (> 0) inseconds. At t = 2.4 s and in unit-vector notation, what are (a) thex component and (b) the y component of the acceleration? (c) When(if ever) is the acceleration zero? (d) At what positive time doesthe speed equal 10 m/s?

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