gravitydisplacementtyyppisiä

Gravity displacement refers to the vertical motion of a body under the influence of gravity, typically considered in the context of kinematics near Earth's surface. In a uniform gravitational field, objects experience downward acceleration g, about 9.81 m/s^2. If released from rest at height h, the vertical displacement after time t is s(t) = 1/2 g t^2; with an initial velocity v0, the displacement becomes s(t) = v0 t + 1/2 g t^2. Displacement is a vector quantity, equal to the difference between final and initial position, and is independent of the path taken.

Air resistance modifies this motion. Drag force increases with velocity and acts opposite to motion, reducing the net acceleration. At terminal velocity, the drag force balances weight, and vertical displacement proceeds at a constant velocity rather than accelerating indefinitely.

In projectile motion, gravity causes a parabolic trajectory; the vertical displacement follows the same equations, while horizontal motion depends on initial velocity and, in real media, air resistance. In engineering and geophysics, gravity-induced displacement can describe sagging in structures under weight, soil compaction, or subsidence from subsurface mass changes.

Measurement of gravity displacement often uses drop tests, laser trackers, or accelerometer data integrated over time to infer vertical movement and the acceleration due to gravity. Limitations include air resistance, buoyancy, and measurement errors. Related topics include gravitational acceleration, kinematics, projectile motion, and drag forces.