Zach, whose mass is 85 kg, is in an elevator descending at 12 m/s. The elevator takes 3.2 s to brake to a stop at the first floor. Part A What is Zach's weight before the elevator starts braking? Express your answer with the appropriate units. W = Submit Part B LO W = μА Value Request Answer What is Zach's weight while the elevator is braking? Express your answer with the appropriate units. μÀ Value Units Submit Request Answer Units ? ?

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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!