2. An object is moving in a circular path at constant speed. If the radius of the circular path is doubled and the speed stays the same, then:   a) The acceleration decreases by four times.   b) The acceleration stays the same.   c) The acceleration is halved.   d) None of the above.   3. A 10 kg object is moving in uniform circular motion with a radius of 20 m. It takes the object 8 s to make one complete revolution.     A. Find the speed of the object.     B. Find the net force acting on the object.

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