A 46.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 24.0 m. (a) What is the centripetal acceleration of the child? magnitude m/s2 direction (b) What force (magnitude and direction) does the seat exert on the child at the lowest point of the ride? magnitude direction (c) What force does the seat exert on the child at the highest point of the ride? magnitude N direction (d) What force does the seat exert on the child when the child is halfway between the top and bottom? (Assume the Ferris wheel is rotating clockwise and the child is moving upward.) magnitude N direction

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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!