Zach, whose mass is 70 kg, is in an elevator going down at 6.0 m/s. The elevator takes 2.0 s to brake to a stop at the bottom floor. What is his apparent weight, in Newtons? Us = 10.0 m/s². Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is neede your answer, it is already given in the question statement.

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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!