def calculate_fuel_consumptions(co2_emissions, fuel_carbon_content):
    """
    Calculates the instantaneous fuel consumption vector [g/s].

    :param co2_emissions:
        CO2 instantaneous emissions vector [CO2g/s].
    :type co2_emissions: numpy.array

    :param fuel_carbon_content:
        Fuel carbon content [CO2g/g].
    :type fuel_carbon_content: float

    :return:
        The instantaneous fuel consumption vector [g/s].
    :rtype: numpy.array
    """
    return co2_emissions / fuel_carbon_content
