Motion in three dimensions is not easy to understand. For example, you — Three-dimensional space
"Motion in three dimensions is not easy to understand. For example, you are probably good at driving a car along a freeway (one-dimensional motion) but would probably have a difficult time in landing an airplane on a runway (three dimensional motion) without a lot of training."
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Three-dimensional space
Three-dimensional space
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In geometry, a three-dimensional space is a mathematical space in which three values are required to determine the position of a point. Alternatively, it can be referred to as 3D space, 3-space or, rarely, tri-dimensional space. Most commonly, it means the three-dimensional Euclidean space, that is, the Euclidean space of dimension three, which models physical space. More general three-dimensional