You are in an elevator that is going from the 5th floor to the ground floor. As you are arriving at the ground floor, the elevator slows to a stop. During this time, how does the normal force on you compare with your weight?  The normal force is less than your weight.  The normal force is greater than your weight  The normal force is equal to your weight.

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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!