First Law Of Motion Easy Definition

First law sometimes called inertia.

First law of motion easy definition.

This post includes newton s first law of motion examples. Understanding first law with an example frequently asked questions. Define first law of motion. First law of motion a body remains at rest or in motion with a constant velocity unless acted upon.

Velocity is a vector quantity which expresses both the object s speed and the direction of its motion. In this article we are going to talk about newton s 1 st law. This law does an introduction of motion of the object and the force acting on it. The first law states that if the net force the vector sum of all forces acting on an object is zero then the velocity of the object is constant.

The focus of lesson 1 is newton s first law of motion sometimes referred to as the law of inertia. Sir isaac newton published three laws in the 17 th century. That means if you kick a ball it will fly forever unless some sort of forces act on it. Newton s first law states that if a body is at rest or moving at a constant speed in a straight line it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force this postulate is known as the law of inertia the law of inertia was first formulated by galileo galilei for horizontal motion on earth and was later generalized by rené descartes.

If a body is at rest it remains at rest or if it is in motion it moves with uniform velocity until it is acted on by a net force. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. First law of motion the first law says that any object in motion will continue to move in the same direction and speed unless forces act on it. A net force means that the forces acting on the object are not balanced.

As strange as this may sound it s true. A uniform velocity means that an object moves at a constant speed without changing direction i e. English dictionary definition of first law of motion. In a straight line.

Look it up now. Therefore the statement that the object s velocity is constant is a statement that both its speed and the direction of its motion are constant. Newton s first law of motion also known as the principle of inertia says every body perseveres in its state of being at rest or of moving uniformly straight forward except insofar as it is compelled to change its state by forces impressed 1 i will argue that inertia is an inherent principle and that inertia and newton s first law are in this way natural in the aristotelian sense. Newton s 1st law of motion deals with the inertial property of matter therefore newton s 1st law of motion is known as the law of inertia.

Examples of newton s first law. When you kick a ball forces start to act on it immediately.