File:Force_examples.svg · Wikimedia Commons · See Wikimedia Commons
Also known as mass times acceleration
In physics, a force is an action that can cause an object to change its velocity or its shape, or to resist other forces, or to cause changes of pressure in a fluid. In mechanics, force makes ideas like 'pushing' or 'pulling' mathematically precise. Because the magnitude and direction of a force are both important, force is a vector quantity (force vector). The SI unit of force is the newton (N), and force is often represented by the symbol .
A force is a push or pull that can change how fast or in what direction an object is moving, change its shape, or affect fluids and other forces. Because both how strong a force is and which direction it points matter, scientists use vectors to represent forces mathematically, measuring them in units called newtons.
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