Draw free-body diagrams for the objects described: A pulley with an object hanging from each side of the rope (draw for both objects), A box sitting on an incline plane/surface, A water bottle sitting on a table

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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!