A wheel has an angular acceleration of alpha=(0.5*theta) rad/s^2 , where theta is in radians. a) Determine the magnitude of the velocity of point P located on its rim after the wheel has rotated 2 revolutions. The wheel has a radius of 0.4m and starts at omega= 2 rad/s. b) Determine the magnitude of the acceleration of point P located on its rim after the wheel has rotated 2 revolutions. The wheel has a radius of 0.4m and starts at omega = 2 rad/s .