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  2. Projectile motion - Wikipedia

    en.wikipedia.org/wiki/Projectile_motion

    The vertical motion of the projectile is the motion of a particle during its free fall. ... Free body diagram of a body on which only gravity and air resistance act.

  3. Motion diagram - Wikipedia

    en.wikipedia.org/wiki/Motion_diagram

    Motion diagrams are a pictorial description of an object's motion. They show an object's position and velocity initially, and present several spots in the center of the diagram. These spots reveal whether or not the object has accelerated or decelerated. [1] For simplicity, the object is represented by a simple shape, such as a filled circle ...

  4. Convective instability - Wikipedia

    en.wikipedia.org/wiki/Convective_instability

    Convective Instability, denoted in the red highlighted region ("positive area"), on a Skew-T log-P diagram. In meteorology, convective instability or stability of an air mass refers to its ability to resist vertical motion. A stable atmosphere makes vertical movement difficult, and small vertical disturbances dampen out and disappear.

  5. External ballistics - Wikipedia

    en.wikipedia.org/wiki/External_ballistics

    A projectile following a ballistic trajectory has both forward and vertical motion. Forward motion is slowed due to air resistance, and in point mass modeling the vertical motion is dependent on a combination of the elevation angle and gravity. Initially, the projectile is rising with respect to the line of sight or the horizontal sighting plane.

  6. Cam (mechanism) - Wikipedia

    en.wikipedia.org/wiki/Cam_(mechanism)

    A simple displacement diagram illustrates the follower motion at a constant velocity rise followed by a similar return with a dwell in between as depicted in figure 2. [4] The rise is the motion of the follower away from the cam center, dwell is the motion where the follower is at rest, and return is the motion of the follower toward the cam ...

  7. Free fall - Wikipedia

    en.wikipedia.org/wiki/Free_fall

    In classical mechanics, free fall is any motion of a body where gravity is the only force acting upon it. A freely falling object may not necessarily be falling down in the vertical direction . If the common definition of the word "fall" is used, an object moving upwards is not considered to be falling, but using scientific definitions, if it ...

  8. Ship motions - Wikipedia

    en.wikipedia.org/wiki/Ship_motions

    The vertical/Z axis, or yaw axis, is an imaginary line running vertically through the ship and through its centre of mass. A yaw motion is a side-to side movement of the bow and stern of the ship. The transverse/Y axis, lateral axis, or pitch axis is an imaginary line running horizontally across the ship and through the centre of mass. A pitch ...

  9. Motion graphs and derivatives - Wikipedia

    en.wikipedia.org/wiki/Motion_graphs_and_derivatives

    Motion graphs and derivatives. ... which is the definition of the average velocity for that interval of time on the graph. If this interval is made to be ...