what is law of inertia?

Question

its uses

Answer 1

The Law of Inertia states that a body that is at rest or in motion, continues to be at rest or motion unless it is acted upon by an external force.

Uses ? : If you want something to happen, then act upon it. Get off your butt and do something about it !

Answer 2

"a body at rest tends to remain at rest;
a body in motion tends to remain in motion"

inertia is related to how much mass is in an object, the law means things keep doing what they're doing unless a Force acts on them.
it's also what you feel resisting you when you try to move/change the velocity of an object.
cheers.

Answer 3

Newton's Laws of Motion are three physical laws which provide relationships between the forces acting on a body and the motion of the body, first formulated by Sir Isaac Newton. Newton's laws were first published in his work Philosophiae Naturalis Principia Mathematica (1687). The laws form the basis for classical mechanics. Newton used them to explain many results concerning the motion of physical objects. In the third volume of the text, he showed that the laws of motion, combined with his law of universal gravitation, explained Kepler's laws of planetary motion.


Newton's Laws of Motion describe only the motion of a body as a whole and are valid only for motions relative to a reference frame. The following are brief modern formulations of Newton's three laws of motion:

First Law
A body at rest remains at rest, and a body in motion continues to move in a straight line with a constant speed unless and until an external unbalanced force acts upon it.
Second Law
The rate of change of momentum of a body is directly proportional to the impressed force and takes place in the direction in which the force acts.
Third Law
To every action (force applied) there is an equal and opposite reaction (equal force in the opposite direction).
Another way of stating Newton's third law is that if object A exerts a force on object B, then object B exerts a force of the same magnitude on A, in the opposite direction.
It is important to note that these three laws together with his law of gravitation provide a satisfactory basis for the explanation of motion of everyday macroscopic objects under everyday conditions. However, when applied to extremely high speeds or extremely small objects, Newton's laws break down; this was remedied by Albert Einstein's Special Theory of Relativity for high speeds and by quantum mechanics for small objects.

Answer 4

it is the newtans first law which states as every object remains in a state of rest or of uniform motion in a straight line unless acted upon by an outside force.

Answer 5

just go through NEWTON'S -first law
u will come to know.

Answer 6

Have a look here: http://csep10.phys.utk.edu/astr161/lect/history/newton3laws.html and here: http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l1a.html

Answer 7

i dunno.......i'll tell you tomorrow.......maybe