physics

Physics describes how physical systems change under constraints such as conservation of mass and energy. A useful model selects variables and assumptions that preserve the behaviour relevant to a question, while leaving other details out. Its predictions depend on those choices.

Physics describes how physical systems change under constraints such as conservation of mass and energy. A useful model selects variables and assumptions that preserve the behaviour relevant to a question, while leaving other details out. Its predictions depend on those choices.

For the tank and drone models in this notebook, the route into the equations is through balance equations and differential equations. A numerical result is only as physical as the assumptions and units behind it.