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March 29, 2017

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what physical law/s were used during the "burns" of Apollo 13 to adjust its path/trajectory and get it home?

I know the thrusters used Newton's third law. What else?

  • physical science - ,

    action and reaction (force on exhaust equal and opposite to force on rocket.)

    conservation of momentum
    velocity of exhaust* mass of exhaust + velocity of vehicle * mass of vehicle after exhaust fired = original velocity of vehicle * original mass of vehicle

    note velocity of exhaust negative as a rule

    gravity G M Mearth/r^2 = Force on vehicle toward earth center

  • physical science - ,

    Note do not forget centripetal acceleration m v^2/r

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