PDF Evidence Of Evolution-Answers In Gray

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Newton's laws of motion | Definition, Examples, & History | Britannica

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How does the body of a gymnast move when she is doing a somersault?

All body actions happen in different planes and round different axes.

A plane is an imaginary flat surface running through the body.

An axis is an imaginary line at right angles to the airplane, about which the body rotates or spins.

Planes and axes of motion

Planes of movement

There are 3 planes of movement:

Sagittal plane - a vertical plane that divides the body into left and right aspects. Flexion and extension kinds of movement occur in this aircraft, eg kicking a soccer, chest cross in netball, strolling, leaping, squatting.Frontal plane - passes from side to side and divides the body into the back and front. Abduction and adduction movements happen on this airplane, eg leaping jack workouts, elevating and decreasing arms and legs sideways, cartwheel.Transverse aircraft - passes thru the heart of the body and divides the body horizontally in an upper and decrease part. Rotation forms of movement occur in this plane, eg hip rotation in a golf swing, twisting in a discus throw, pivoting in netball, spinning in skating.

Movements are parallel to the airplane in which they take place.

Axes of motion

There are three axes of motion round which the body or body parts rotate:

Frontal axis - this line runs from left to all the way through the centre of the body. For example, when a person plays a somersault they rotate round this axis.Sagittal (also known as the antero-posterior) axis - this line runs from front to back via the centre of the body. For instance, when a person plays a cartwheel they're rotating about the sagittal axis.Vertical axis - this line runs from most sensible to bottom thru the centre of the body. For instance, when a skater plays a spin they're rotating around the vertical axis.Frontal axisSagittal axisVertical axisQuestion

What plane of movement and axis of rotation does a forward roll happen in?

Reveal resolution

Plane – sagittal, as there may be flexion and extension of the knees, elbows, neck and backbone.

Axis – frontal, as there's rotation around a line running from left to right through the centre of the body.

The topic of movement research hyperlinks closely with the subjects on the skeletal machine and the muscular system.