You must draw a free body diagram with the appropriate net force equation(s). You must show your work, always starting with an equation. No numbers should just "appear" except for gravity (10m/s³) and the numbers in the problem. 1. You are in an elevator standing on a scale. The scale reads 486N. You feel a change in the elevator's motion. You notice the scale now reads 495N. Calculate the acceleration of the elevator. elevator: (circle only one, but there may be more than one correct answer a, starting at the bottom and moving up? b. going up and coming to a stop? C. starting at the top and moving down? d. moving down and coming to a stop?

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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!