University Physics with Modern Physics with Mastering Physics (11th Edition)

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4.38: a) N 539 = = mg w b) Downward velocity is decreasing so a is upward and the net force should be upward. mg F air , so the net force is upward. c) Taking the upward direction as positive, the acceleration is
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Unformatted text preview: . s / m 47 . 1 s / m 80 . 9 kg . 55 N 620 s / m 80 . 9 2 2 2 air air =-=-=-= = m F m mg F m F a...
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