The focal length alters perspective relations in the shot. Three types of lenses convey different relations. This alters perception, and makes the viewer think that there is more space than there actually is. A tiny room can appear to be much larger. Because of this, movement of characters appears to be faster.
Normal depth is the same A Normal lens attempts to minimise any 'fooled' perception.
The space and perspective should seem adequately spaced. A tiny room would appear to be a tiny room. Telephoto depth is shorter A Telephoto lens flattens the depth planes, making spaces seem to be smaller. Imagine a telephoto lens in a soap opera, turning a huge studio set into the look of a tiny living room. Distances can squash together, giving an alteration of perspective as noticable as a Wide-angle lens.