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Small rockets are used to make tiny adjustments in the speeds of satellites. One such rocket has a thrust of 35 N. If it is fired to change the velocity of a 72300 kg spacecraft by 64 cm/s, how long should it be fired?

  • physics -

    Calculate the desired momentum change.
    72300 kg * 0.64 m/s = ?

    That equals the impulse needed.

    Divide the impulse by the force to get the time needed.

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