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Is this a serious question? Cuz' lots of things do. :p
An Oscillating motion is one that moves forwards and backwards in an arc or circle repeatedly.
vibrations
Forcing backwards will result on a impulse forwards.
negative
The tympanic membrane, or ear drum. A thin piece of skin inside the ear that moves backwards and forwards when sound waves reach it
The atoms of the particular medium in which the sound is produced moves backward and forwards in sound.
A swing!
Is this a serious question? Cuz' lots of things do. :p
The truck is heavier
no bird can only move backwards! only a hummingbird has the ability to move backwards but it also moves forwards and left to right!
An Oscillating motion is one that moves forwards and backwards in an arc or circle repeatedly.
backwards
vertical
One example of a vegetable name that is the same backwards and forwards is "radar."
Words that are the same forwards and backwards are called palindromes.
None are but what cities/towns are spelled the same backwards and forwards?