The weight of an airplane is calculated by the pilots. The pilot takes the empty weight of the aircraft, adds the fuel, adds a standard weight for each passenger and the measured weight of all the baggage. If this weight is over the maximum allowed weight, the airplane is overweight and they will send some luggage on another flight.
It depends on what kind of jet or commercial airplane it is.
Acceleration of a commercial airplane can be calculated by dividing the change in velocity during a specific time interval by that time interval. This can be measured using instruments like accelerometers on the airplane or by analyzing data from the airplane's flight instruments.
A commercial airplane is an airplane that is being used in commercial service--where people are paying for the plane to be flown. ANY plane can be a commercial airplane; if you've got a business picking up X-rays from small airports then flying them to Rochester International Airport in Minnesota so a doctor from the Mayo Clinic can review them, and you use the cheapest Cessna you can get your hands on to do it, that Cessna is a commercial airplane. Having said that, usually "commercial airplane" means one that's large enough to carry many passengers or a lot of cargo.
The most popular commercial airplane is the Boeing 737.
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The Airbus A380
The biggest Commercial Airliner is curently the Airbus industry A380 model.
As of 2016, the Airbus A380 is the largest commercial airplane in the world. It includes beds, showers, libraries, kitchens, and dining halls. It was released in 2006.
There are three (3) different markets for airplane manufacturers: Private, Commercial, and Military.
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