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.
The vertical component has gravity acting against the projectile so its motion is that of an object that has been thrown into the air or dropped from a platform. When these two motions are combined, the resulting path is known as a parabola. Even for extended complicated objects the motion is roughly parabolic.