can you please explain Newton's First Law of motion?

Answer 1

Newton's First Law of Motion is also known as the "Law of Inertia."

His "Laws of Motion" were first propounded in Latin, a very economical language. It takes almost 50% more words to state the same things in English!

Here's the original English translation of the First Law:

"Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it."

What Newton is saying is first, that something at rest won't spontaneously start to move unless "something" (a force) acts upon it. It will "continue in its state of rest." Secondly, if it IS moving with a certain speed, it will continue to move with that same speed (and so be in a "state of uniform motion"), in a straight line ("a right line" --- that's 17th century mathematical terminology for "straight line") unless it too has "something" (an "impressed force") operate on it to change that continued same speed ("state of uniform motion").

Both the "state" of being at rest, and the "state" of having a certain speed, are both covered in this First Law; neither "state" of motion can change unless some force or forces act upon the body.

It's also called the Law of Inertia because "Inertia" is connected with not moving or changing. We might say that about someone who is difficult to get up from a chair, or who is stuck in undesirable patterns of behaviour: "Oh, he's simply overcome by inertia!"

I hope this helps.

Live long and prosper.

(Newton's next Law deals with the consequences of having a force be "impressed" upon the body. Having defined what he means by an unchanging state of motion, he moves on to discuss what is needed to cause a change in that state of motion.)

Answer 2

An object at rest will remain at rest unless acted upon by an external and unbalanced force. An object in motion will remain in motion unless acted upon by an external and unbalanced force.

This law is also called the law of inertia.

The net force on an object is the vector sum of all the forces acting on the object. Newton's first law says that if this sum is zero, the state of motion of the object does not change. Essentially, it makes the following two points:

An object that is not moving will not move until a net force acts upon it.
An object that is in motion will not change velocity (accelerate) until a net force acts upon it.
The first point seems relatively obvious to most people, but the second may take some thinking through, because we have no experience in every-day life of things that keep moving forever (except celestial bodies). If one slides a hockey puck along a table, it doesn't move forever, it slows and eventually comes to a stop. But according to Newton's laws, this is because a force is acting on the hockey puck and, sure enough, there is frictional force between the table and the puck, and that frictional force is in the direction opposite the movement. It is this force which causes the object to slow to a stop. In the absence of such a force, as approximated by an air hockey table or ice rink, the puck's motion would not slow. Newton's first law is just a restatement of what Galileo had already described and Newton gave credit to Galileo. It differs from Aristotle's view that all objects have a natural place in the universe. Aristotle believed that heavy objects like rocks wanted to be at rest on the Earth and that light objects like smoke wanted to be at rest in the sky and the stars wanted to remain in the heavens.

However, a key difference between Galileo's idea from Aristotle's is that Galileo realized that force acting on a body determines acceleration, not velocity. This insight leads to Newton's First Law - no force means no acceleration, and hence the body will continue to maintain its velocity.

Answer 3

Isaac Newton (a 17th century scientist) put forth a variety of laws which explain why objects move (or don't move) as they do. These three laws have become known as Newton's three laws of motion. The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the "law of inertia."

Newton's first law of motion is often stated as

An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

The behavior of all objects can be described by saying that objects tend to "keep on doing what they're doing" (unless acted upon by an unbalanced force). If at rest, they will continue in this same state of rest. If in motion with an eastward velocity of 5 m/s, they will continue in this same state of motion (5 m/s, East). If in motion with a leftward velocity of 2 m/s, they will continue in this same state of motion (2 m/s, left). The state of motion of an object is maintained as long as the object is not acted upon by an unbalanced force. All objects resist changes in their state of motion - they tend to "keep on doing what they're doing."

Answer 4

Newtons first law of motion is explained like this........
An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction, UNLESS ACTED UPON BY AN UNBALANCED FORCE!! Meaning that a force WILL stay in motion untill acted upon another acted force!

Hope it answers you question!
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ima whiz in science!

Answer 5

Abody in its state of rest or of uniform motion in a straight line unless external force acts on it.for example, if any vechile is moving on roadthen a force(either in the form of brake or in the formfriction appearing between two tyres and road)will have to be applied to stop vehicle.

Answer 6

because of the fact fact encompasses each thing interior our universe we can't be conscious outdoors of it. this is accessible our finished universe is in basic terms a subatomic particle of an better universe. That of course pushes the question extra suitable back without answering it. i could no longer probable say something conclusive in regards to the preliminary propellant, yet there are people extra qualified than myself who would desire to offer a extra credible answer than myself. i think of the main extreme discovery of guy has been that factors of fact that have in the previous been credited to god have been got here across to have organic reasons. Pushing god some time past to in basic terms the commencing up of existence is ridiculous. What made god? If each thing demands a author to exist then what created god? there is plenty extra probably to be a organic clarification to god. i think of that's the self-esteem of mankind to presume the author of existence could be anthropomorphic. Like he's The author, like incomes brownie factors with sky daddy by ability of utilising capital letters. Such conceited crap. Andes made by ability of tectonic forces, existence powered by ability of the solar. each thing has a reason and in basic terms guy could be smart AND stupid sufficient to presume it became some thing unsleeping that did it. I understand the reasoning although this is BS!!

Answer 7

It's basically inertia.

Inertia is the tendency of an object to resist change in motion.

Think of a car. It's moving forward, but do you feel it? No. But when it brakes, you still move forward until the car completly stops.