A figure skater spins at an angular velocity of 4.5 rev/s clockwise. Treat the clockwise direction to be positive. Include units as appropriate below. (a) What is his angular velocity (include direction) in radians per second? W = + (b) What is the centripetal acceleration of his nose if it is 0.08 m from the axis of rotation? aci rad/s, (c) An exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since - at about 9 rev/s clockwise. What was the centripetal acceleration of the tip of his nose if it is also 0.08 m from the axis of rotation? ac =