Answered: 8.00 m/s 75.0 kg 12.0 kg Figure P6.29

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8.00 m/s 75.0 kg 12.0 kg Figure P6.29

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter9: Momentum And Its Conservation

Section: Chapter Questions

Problem 8STP

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Question

An astronaut in her space suit has a total mass of
87.0 kg, including suit and oxygen tank. Her tether line loses
its attachment to her spacecraft while she’s on a spacewalk.
Initially at rest with respect to her spacecraft, she throws her
12.0 - kg oxygen tank away from her spacecraft with a speed of
8.00 m/s to propel herself back toward it (Fig. P6.29).
(a) Determine the maximum distance she can be from the
craft and still return within 2.00 min (the amount of time the
air in her helmet remains breathable). (b) Explain in terms
of Newton’s laws of motion why this strategy works.

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