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Sep 12, 2022 · Define the SI unit of force, the newton. Describe force as a vector. The study of motion is called kinematics, but kinematics only describes the way objects move—their velocity and their acceleration. Dynamics is the study of how forces affect the motion of objects and systems.
There are a variety of types of forces. Previously in this lesson, a variety of force types were placed into two broad category headings on the basis of whether the force resulted from the contact or non-contact of the two interacting objects. Contact Forces. Action-at-a-Distance Forces. Frictional Force.
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An intuitive definition of force —that is, a push or a pull—is a good place to start. We know that a push or a pull has both magnitude and direction (therefore, it is a vector quantity), so we can define force as the push or pull on an object with a specific magnitude and direction.
Dec 16, 2023 · Understand the four basic forces that underlie the processes in nature. One of the most remarkable simplifications in physics is that only four distinct forces account for all known phenomena. In fact, nearly all of the forces we experience directly are due to only one basic force, called the electromagnetic force.
In the next three sections discussing Newton’s laws of motion, we will learn about three specific types of forces: friction, the normal force, and the gravitational force. To analyze situations involving forces, we will create free-body diagrams to organize the framework of the mathematics for each individual situation.
A force is a vector quantity which describes both the strength of the push or pull (the magnitude of the force vector) and the direction of push and pull. As we will see in the next few chapters both the strength and the direction of the force is essential to describing the dynamics of objects.
The four fundamental forces are gravity, electromagnetism, weak nuclear force, and strong nuclear force. Understanding the Four Forces. The gravitational force is most familiar to us because it describes so many of our common observations. It explains why a dropped ball falls to the ground and why our planet orbits the Sun.
