Thrust generated by a jet engine. According to Newton’s second law of motion, the force acting on an object is equal to the change in its momentum per unit time1
T=m*(Vj-V infinite)
T = Thrust generated by the jet engine or propulsion system (force in Newtons or pounds-force) m = Mass flow rate of air passing through the engine (mass per unit time in kilograms per second or pounds per second) Vj = Jet velocity, which is the velocity of the exhaust gases expelled by the engine relative to the engine (velocity in meters per second or feet per second) Vinfinite = Velocity of the incoming air (free-stream velocity) before entering the engine (velocity in meters per second or feet per second)