Uniform circular motion is used in physics to describe the motion of an object traveling at a constant speed in a circle. the speed of the object is called tangential velocity and it can be calculated using the formula above, where r is the radius of the circle and t is the time is takes for the object to make one complete circle, called a period. which of the following formulas could be used to find the length of one period if you know the tangential velocity and the radius of the circle?