At time t= 0s, a wheel has an angular displacement of zero radians and an angular velocity of +15 rad/s. The wheel has a constant acceleration of -0.48 rad/s?. In this situation, the time at which the angular displacement is +78 rad and decreasing is closest to O A. 5 s O B. 57 s OC. 31 s O D.6s O E. 67 s

Definition Definition Angle at which a point rotates around a specific axis or center in a given direction. Angular displacement is a vector quantity and has both magnitude and direction. The angle built by an object from its rest point to endpoint created by rotational motion is known as angular displacement. Angular displacement is denoted by θ, and the S.I. unit of angular displacement is radian or rad.