Machine learning & AI

CITE23: How to start an AI task force at your school

An emerging consensus among school technologists is that generative artificial intelligence (GenAI) is irrepressible, so the process of embracing it has to start somewhere. One approach that has made progress at La CaƱada ...

Robotics

A gecko-inspired twist on robotic handling

The subtle adhesive forces that allow geckos to seemingly defy gravity, cling to walls and walk across ceilings have inspired a team of researchers in South Korea to build a robotic device that can pick up and release delicate ...

Machine learning & AI

UK prepares to host global leaders' gathering on AI

The UK government will welcome foreign political leaders, tech industry figures, academics and others this week for a two-day summit billed as the first of its kind on artificial intelligence (AI).

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Force

In physics, a force is any influence that causes an object to undergo a change in speed, a change in direction, or a change in shape. In other words, a force is that which can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or which can cause a flexible object to deform. Force can also be described by intuitive concepts such as a push or pull. A force has both magnitude and direction, making it a vector quantity. Newton's second law, F=ma, was originally formulated in slightly different, but equivalent terms: the original version states that the net force acting upon an object is equal to the rate at which its momentum changes.

Related concepts to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque which produces changes in rotational speed of an object. Forces which do not act uniformly on all parts of a body will also cause mechanical stresses, a technical term for influences which cause deformation of matter. While mechanical stress can remain embedded in a solid object, gradually deforming it, mechanical stress in a fluid determines changes in its pressure and volume.

This text uses material from Wikipedia, licensed under CC BY-SA