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An Airbus A380 Airliner Lands at 30m/s Partially Loaded, Its Mass Is 480000 Kg. The Engines App Ly Reve Thrust for 12 S to Slow the

Problemas

An Airbus A380 airliner lands at 30m/s Partially loaded, its mass is 480000 kg. The engines app ly reve thrust for 12 s to slow the plane to 25m/s How much thrust did the engines apply?

Roztwór

Geraldine professionell · Tutor durante 6 años
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Respuesta

To find the thrust applied by the engines, we can use the impulse-momentum theorem. The impulse-momentum theorem states that the change in momentum of an object is equal to the impulse applied to it. Mathematically, this can be expressed as: where:- is the force (thrust) applied,- is the time duration over which the force is applied,- is the mass of the object,- is the change in velocity.Given:- Initial velocity, ,- Final velocity, ,- Mass, ,- Time duration, .First, calculate the change in velocity ( ): Now, substitute the values into the impulse-momentum equation to solve for : The negative sign indicates that the thrust is applied in the opposite direction of the motion, which is expected since it is a decelerating force. Therefore, the magnitude of the thrust applied by the engines is .