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radians and seconds, respectively. Simultaneously, the arm is programmed to extend so that the distance to A follows the relationship r = 4 + 3e-1.4t, where r and t are expressed in feet and seconds,respectively. When t= 2.65 s, (a) the velocity of point A in polar coordinates (ê, and êg), (b) the velocity of point A in rectangular coordinates, (î and ĵ) (c) the acceleration of point A in polar coordinates (êr and êg) (d) the acceleration of point A rectangular coordinates (î and ĵ)

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