For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule must reduce their

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For a safe re-entry into the Earth's atmosphere, the pilots of a space capsule must reduce their speed from 2.6 × 104 m/s to 1.1 × 104 m/s. The rocket engine produces a backward force on the capsule of 1.8 × 105 N. The mass of the capsule is 3800 kg. For how long must they fire their engine? [Ignore the change in mass of the capsule due to the expulsion of exhaust gases.]
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Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

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