A ball swings in a vertical circle at the end of a rope 1.20 m long. When the ball is 36.5° past the lowest point on its way up, its total acceleration is (-22.5ˆi &20.2ˆj) m/s2. At that instant, (a) sketch a vector diagram showing the components of its acceleration, (b) determine the magnitude of its radial acceleration, and (c) determine the speed and velocity of the ball.