"Mr. Fogg played, not to win, but for the sake of playing. The game was in his eyes a contest, a
struggle with a difficulty, yet a motionless, unwearying struggle, congenial to his tastes. "
The first thing that comes to mind is the motion. The motion is a change in position of an object with respect to time and its reference point. Motion is a typically described in terms of displacement, velocity, acceleration (the variation of speed in a certain period of time) and time.
According to these characteristics of motion can be:
-Planar motion if the trajectory is a straight line.
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| straight tracks of a train |
-Curvilinear motion if the trajectory is a curvilinear line.
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| roller coaster |
-This motion can be divied in spherical motion,
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| London eye |
an another example of motion spherical is the motion of of the mechanism below.
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| Drawing trasmission mechanism by Francesco di Giorgio taken by treaties of civil and military engineers (1484) |
and in elliptic motion:
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| solar system |
and parabolic motion:
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| jump of a skier |
-Varied motion if the motion of a body that changes its speed.
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| city traffic |
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