what is motion???and explain about it??
Answers
Answer:
In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. The motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame with change in time. The branch of physics describing the motion of objects without reference to its cause is kinematics; the branch studying forces and their effect on motion is dynamics.
Answer:
Motion, in physics, change with time of the position or orientation of a body. Motion along a line or a curve is called translation. Motion that changes the orientation of a body is called rotation. In both cases all points in the body have the same velocity (directed speed) and the same acceleration (time rate of change of velocity). The most general kind of motion combines both translation and rotation.
Motion
QUICK FACTS
KEY PEOPLE
Thomas Hobbes
Galileo
Gottfried Wilhelm Leibniz
Jean Buridan
Pafnuty Chebyshev
Giovanni Alfonso Borelli
RELATED TOPICS
Mechanics
History of flight
Magnetic resonance
Movement perception
Wave
Brownian motion
Matter
Wave motion
Magnetic resonance imaging
Newton's laws of motion
All motions are relative to some frame of reference. Saying that a body is at rest, which means that it is not in motion, merely means that it is being described with respect to a frame of reference that is moving together with the body. For example, a body on the surface of the Earth may appear to be at rest, but that is only because the observer is also on the surface of the Earth. The Earth itself, together with both the body and the observer, is moving in its orbit around the Sun and rotating on its own axis at all times. As a rule, the motions of bodies obey Newton’s laws of motion. However, motion at speeds close to the speed of light must be treated by using the theory of relativity, and the motion of very small bodies (such as electrons) must be treated by using quantum mechanics.
Isaac Newton
READ MORE ON THIS TOPIC
philosophy of physics: The question of motion
Long before Kant, Newton himself designed a thought experiment to show that relationism must be false....
The Editors of Encyclopaedia Britannica
This article was most recently revised and updated by Adam Augustyn, Managing Editor, Reference Content.
LEARN MORE in these related Britannica articles:
Isaac Newton
philosophy of physics: The question of motion
Long before Kant, Newton himself designed a thought experiment to show that relationism must be false....…
Aristotle
Aristotle: Motion
Motion (kinesis) was for Aristotle a broad term, encompassing changes in several different...…
Babylonian mathematical tablet
mathematics: The universities
Uniformly accelerated motion starting at zero velocity gives rise to a triangular figure (see...…
newsletter icon
HISTORY AT YOUR FINGERTIPS
Sign up here to see what happened On This Day, every day in your inbox!
Email address
Email address
By signing up, you agree to our Privacy Notice.
Inspire your inbox – Sign up for daily fun facts about this day in history, updates, and special offers.
Enter your email
Enter your email
By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.
Click here to view our Privacy Notice. Easy unsubscribe links are provided in every email.
About Us & Legal Info
Partner Program
Contact Us
Privacy Notice
Terms of Use
©2021 Encyclopædia Britannica, Inc.
close
Ring in the new year with a Britannica Membership - Now 30% off.
Learn More!