Suppose that frame k' is moving with constant macroscopic velocity v with respect to frame k. a free particle moves with velocity in frame k. (a) show that the lagrangian l of the particle in frame k' can be represented by l' l+df/dt, where l is the lagrangian for the particle in frame k and f is a function of the particle's position f and time t (b) given this difference between l' and l, what can you say about the equation of motion in each frame?

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

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answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

momentum of soft ball three times less than baskey ball

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )