1. The vector position of a particle varies in time according to the expression r = (3.00 î–6.00 t² ĵ), where ŕ is in meters and t is in seconds. (a) Find an expression for the velocity of the particle as a function of time. (b) Determine the acceleration of the particle as a function of time. (c) Calculate the particle's position and velocity at t = 1.00 s.

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