The oscillation of rod oa about o is defined by the relation θ 5 (3yπ)(sin πt), where θ and t are expressed in radians and seconds, respectively. collar b slides along the rod so that its distance from o is r 5 6(1 2 e22t ) where r and t are expressed in inches and seconds, respectively. when t 5 1 s, determine (a) the velocity of the collar, (b) the acceleration of the collar, (c) the acceleration of the collar relative to the ro