A spacecraft starts from rest, and makes a journey to a destination 458000 km from its starting point. It does so by accelerating at a constant rate of 6.46 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 6.46 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
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  1. A spacecraft starts from rest, and makes a journey to a destination 458000 km from its starting point. It does so by accelerating at a constant rate of 6.46 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 6.46 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take?
       
    3 hr 18 min
       
    19 hr 42 min
       
    9 hr 51 min
       
    4 hr 41 min
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