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S-wave -brony
This type of motion is called harmonic motion. This occurs when an object is attached to spring.
friction, or the force of energy which occurs when two or more objects rub against each other.
kinetic
The molecules of a solid continuously vibrate back and forth without ever moving position. An example is a person jumping up and down, they are moving, but they don't move forward, back, left, or right.
The type of seismic waves that cause back and forth motions are P waves. P waves cause particles in material to vibrate back and forth.
Transverse wave longitudinal wave-hint back and forth
earthquakes
The type writer was invented for fast and easy messages back and forth in the onlen days.
p-waves
True. The up-down type of wave is called a "transverse wave". Light, for example, is this kind of wave. Sound, however, is a different kind of wave. It is the back-forth type, called "longitudinal", or "compression" waves.
segmentation
Balling the fist and moving it back and forth in the air is a type of celebration jesture.
fun movements
That would be the teen in south Idaho who, when watching his dad plow the potato fields back and forth, back and forth, got the idea of inventing television using the same type of back and forth scanning. Philo T. Farnsworth went on to become a prolific inventor of many things.
Hinge joints
If it's an SPD-type of shoe you can move the cleat back & forth, sideways and in angle.