def jet_power(F, m_dot):
    """Jet power of a rocket propulsion device.

    Compute the kinetic power of the jet for a given thrust level and mass flow.

    Reference: Goebel and Katz, equation 2.3-4.

    Arguments:
        F (scalar): Thrust force [units: newton].
        m_dot (scalar): Jet mass flow rate [units: kilogram second**-1].

    Returns:
        scalar: jet power [units: watt].
    """
    return F**2 / (2 *  m_dot)