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Mallory Foltz

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  1. momentum
    the product of a body's mass and its velocity
    Suddenly, part of the fuel has momentum, mv, toward the left as shown in the diagram.
  2. vector
    a quantity that has magnitude and direction
    This means that the rocket must have an equal momentum to the right:
    procket = -pfuel
    The negative sign means that the two momentum vectors are in opposite directions (and therefore cancel).
  3. rocket
    an object propelled by blasting gas from an engine carrying its own air
    When the rocket's engine fires, it pushes fuel out of the end of the rocket.
  4. velocity
    distance traveled per unit time in one direction
    Even though the momentum of the rocket and the momentum of the fuel are the same size, their velocities are not the same size.
  5. diagram
    a drawing intended to explain how something works
    Suddenly, part of the fuel has momentum, mv, toward the left as shown in the diagram.
Created on 十二月 13, 2010

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