And some may have temporary behavior problems due to stress. For example, the birth of a sibling, a divorce, or a death in the family may cause a child to act out. Behavior disorders are more serious. They involve a pattern of hostile, aggressive, or disruptive behaviors for more than 6 months. The behavior is also not appropriate for the child's age.
Fundamental Ambiguity in the Definition of Vertical Motion Geoffrey Blewitt Mackay School of Earth Sciences and Engineering, University of Nevada, Reno, USA. Abstract. Vertical motion is generally described as motion normal to some defined horizontal surface or family of surfaces. Such a surface can be con-structed geometrically or gravitationally.
Best Answer: Horizontal and vertical are simply directions relative to some reference frame. Typically the reference frame in HS and early college physics is Earth's surface.In which case horizontal means parallel to Earth's surface and vertical means perpendicular to Earth's surface.In advanced math and physics, the terms horizontal and vertical will be replaced by unit vectors i, j, and k; where i dot i = 1 etc.nd Ay = A, which means the A vector is pointing straight up the vertical axis. In this case, there is no Ax component. In higher trig you will learn about transformations where we rotate the axes some degrees with the result sometimes of simplifying an otherwise difficult problem.