First Law Of Motion Formula Class 9

The first law of motion implies that things cannot start stop or change direction all by themselves.

First law of motion formula class 9.

We shall now learn about newton s first law of motion. Students of the 9th standard are advised to learn the physics formula lists thoroughly to build a strong grip on the subject. Chapter force and laws of motion physics formula is useful for quick revision understand the application of physics formula in class 9 help you to solve questions of force and laws of motion in. The first equation of motion is v u at where v is the final velocity and u is the initial velocity of the body.

There are three equations of bodies moving with uniform acceleration which we can use to solve problems of motion. Understanding first law with an example frequently asked questions. Velocity is a vector quantity which expresses both the object s speed and the direction of its motion. Consider the diagram of the velocity time graph of a body below.

Without having a grip on the formulas students will face lots of difficulties solving problems on topics like optics electric current electromagnetism laws of motion electromagnetic radiation etc. Motion of class 9 when the body is moving along a straight line with uniform acceleration a relation can be established between velocity of the body acceleration of the body and the distance travelled by the body in a specific time by a set of equations. Sir isaac newton published three laws in the 17 th century. First equation of motion.

It requires some force from the outside to cause such a change. The first law of motion is stated as. This law does an introduction of motion of the object and the force acting on it. Newton used these laws to explain and investigate the motion of many physical objects and systems.

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. In this the body is moving with an initial velocity of u at point a the velocity of the body then changes from a to b in time t at a uniform rate in the above diagram bc is the final velocity i e. Newton s first law of motion. Newton s first law of motion.

This property of massive bodies to resist changes in their state of motion is called inertia. Newton s first law is also known as the law of inertia. The three laws of motion were first compiled by sir isaac newton in his work principia mathematica first published in 1687. V after the body travels from a to b at a uniform acceleration of a in the graph oc is the time t.

First equation of motion gives velocity acquired by body at any time t.