Anna (50 kg) is riding in her car traveling through hilly terrain. When her car is at the top of a hill (radius of curvature = 100 m) she experiences a normal force of 355 Newtons. Use g=10N/kg for the gravitational constant. Draw a force diagram and determine which force is larger-normal force or gravitational force. Why? What speed is she traveling over the hill? S

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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!