Q8: An object travels at constant speed around a circle of radius, r. The object completes one revolution in a time, T. (The time it takes an object to complete one revolution is called the period of revolution.)Determine an expression for the speed of the object in terms of r and T using your definition from Q7. You can type the number π as pi. Q9: Using the result of Q8, write the expression for the centripetal acceleration of an object (ac) in terms of the time it takes to complete one revolution, T, and the radius, r, of the circular path around which the object is traveling. Page 6-5