# Plane Motion

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Plane Motion

the motion of a rigid body such that all its points move parallel to some fixed plane. The study of plane motion reduces to the study of the motion of an invariant plane figure within its plane. Such motion is composed of translational motion together with an arbitrarily selected pole around which rotational motion occurs. Plane motion can also be represented as a series of elementary rotations about instantaneous centers of rotation that continuously change position.

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The adolescent dancers in the present study landed with greater transverse and frontal plane motion than the non-dancers.
where: [micro] is the stiffness of the elastic foundation of Winkler type for plane motion and [[micro].sub.z] is the stiffness of the elastic foundation of Winkler type for motion in the direction of the z axis and:
Using figures and graphs, this manual covers all aspects of analyzing walking, addressing calculation of walking speed and its functional significance; temporal and spatial characteristics in the normal population as a basis for comparison with people with disabilities; kinematics, with illustrations and descriptions of sagittal plane motion, as well as frontal and transverse motions; kinetics, with visualization of the ground reaction force vector superimposed on figures, to provide a basis for understanding external moments and the associated demands placed on muscles and passive structures; functional gait measures; and pathological gait.
After a goal, the fans often do the Dambusters March where they do a plane motion. It's a good sight when there's a big away following.
Despite the large number of methods of the MR trajectories formation almost all of them consider the problem of plane motion. It significantly reduces the functionality of the MR moving in space (underwater vehicles (UV) and unmanned aerial vehicles (UAV)).
Mathematical models of a space debris plane motion under the action of the gravitational, ion flux forces, and torques will be developed in this section.
Postoperatively, the patient had regained active flexion to the range of 70[degrees] with passive range of 90[degrees] and coronal plane motion to the range of 20[degrees].
Through joint kinematics analysis, we found that the back kick primarily depended on flexion/extension of the hip and knee joints (sagittal plane motion) while minimizing hip rotation (transverse plane motion) and abduction/adduction (frontal plane motion) generating the kicking velocity.
The non-dimensional equations describing the steady plane motion of an incompressible fluid of variable viscosity in the absence of external forces (neglecting viscous dissipation) are
On the basis of the data acquired, the roll mode of lateral plane motion and short period mode of longitudinal plane motion were identified.
There was also high variability in the data particularly with respect to the hip transverse plane motion, which is attributed to difficulties in obtaining these measurements, but could also possibly be a reflection of the sample size.

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