(Forall
(?Self ?Time)
(=> (Active ?Time 2d-Stream-Kinetic-Energy ?Self)
(= (Lambda (?T)
(If (= ?T ?Time)
(Value-At (Ke-Rate (2d-Stream-Involved ?Self))
?T)))
(* 0.5
(Lambda (?T)
(If (= ?T ?Time)
(Value-At (Mass-Rate
(2d-Stream-Involved ?Self))
?T)))
(Expt (Lambda
(?T)
(If (= ?T ?Time)
(Value-At
(Velocity (2d-Stream-Involved ?Self))
?T)))
2)))))
(Forall (?Self ?Time)
(<=> (Active ?Time 2d-Stream-Kinetic-Energy ?Self)
(And (2d-Stream-Kinetic-Energy ?Self)
(Active ?Time 2d-Stream-Operating-Mode ?Self))))