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- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_I_-_Classical_Mechanics_(Gea-Banacloche)/01%3A_Reference_Frames_Displacement_and_Velocity/1.01%3A_IntroductionClearly, if we want to describe accurately the position of a macroscopic object such as a car, we may need a lot of information, including the precise shape of the car, whether it is turned this way o...Clearly, if we want to describe accurately the position of a macroscopic object such as a car, we may need a lot of information, including the precise shape of the car, whether it is turned this way or that way, and so on; however, if all we want to know is how far the car is from Fort Smith or Fayetteville, we do not need any of that: we can just treat the car as a dot, or mathematical point, on the map—which is the way your GPS screen will show it, anyway.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/08%3A_Kinematics_in_One_Dimension/8.01%3A_PositionFor one-dimensional motion, we align the x axis with the direction of the motion, and we are free to choose the origin at any place that’s convenient. If a particle is at at position x1 at some...For one-dimensional motion, we align the x axis with the direction of the motion, and we are free to choose the origin at any place that’s convenient. If a particle is at at position x1 at some time t1, then at position x2 at some later time t2, then the particle has undergone a displacement
- https://phys.libretexts.org/Courses/Merrimack_College/Conservation_Laws_Newton's_Laws_and_Kinematics_version_2.0/01%3A_C1)_Abstraction_and_Modeling/1.02%3A_Modeling_in_PhysicsThe reason this is a useful concept is not just that we can often treat extended objects as particles in an approximate way (like the car in the example above), but also, and most importantly, that if...The reason this is a useful concept is not just that we can often treat extended objects as particles in an approximate way (like the car in the example above), but also, and most importantly, that if we want to be more precise in our calculations, we can always treat an extended object (mathematically) as a collection of “particles.” The physical properties of the object, such as its energy, momentum, rotational inertia, and so forth, can then be obtained by adding up the corresponding quantit…
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/15%3A_Electromagnetic_Radiation/15.07%3A_A_New_Paradigm'Is' light a wave or 'is' it a particle? Yes.
- https://phys.libretexts.org/Courses/Gettysburg_College/Gettysburg_College_Physics_for_Physics_Majors/01%3A_C1)_Abstraction_and_Modeling/1.02%3A_Modeling_in_PhysicsThe reason this is a useful concept is not just that we can often treat extended objects as particles in an approximate way (like the car in the example above), but also, and most importantly, that if...The reason this is a useful concept is not just that we can often treat extended objects as particles in an approximate way (like the car in the example above), but also, and most importantly, that if we want to be more precise in our calculations, we can always treat an extended object (mathematically) as a collection of “particles.” The physical properties of the object, such as its energy, momentum, rotational inertia, and so forth, can then be obtained by adding up the corresponding quantit…
