Say that an object of mass is pushed by a system of two radial Forces and moves with a constant speed V In a circle. Which of the following relations are true about this motion? A) The acceleration of the system is zero because the speed is constant B) The object will experience a net centrifugal force that will tend to throw the mass out of the circle C) The object will experience a net centripetal force that will tend to keep the mask on the circle. D) F1

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!