Why second law of motion is real law?

Why second law of motion is real law?

Ans: Newton’s Second law of motion is called real law of motion because all the laws can be derived and are contained in this law. Proof: We know, F = m. If no external force acts on a body, then F = 0, since f = ma, a = 0 because mass of a body cannot be 0.

Which law is fundamental law of motion Why?

Answer. Answer: Newton’s second is known as fundamental law Because it gives an idea about how the motion of a body change and how changes in motion is related to the mass of the body and the force acting on the body.

Which is real law of motion?

Newton’s second law is the real law of motion and the other two laws can be deduced from 2nd law.

What is Newton’s 3nd law called?

There are two forces resulting from this interaction – a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton’s third law of motion. Formally stated, Newton’s third law is: For every action, there is an equal and opposite reaction.

What is the name of the second law of motion?

According to Newton s Second Law of Motion, also known as the Law of Force and Acceleration, a force upon an object causes it to accelerate according to the formula net force = mass x acceleration. So the acceleration of the object is directly proportional to the force and inversely proportional to the mass.

Why is gravity not a law?

Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of masses moving along geodesic lines in a curved spacetime caused by the uneven distribution of mass.

What is inertial and non inertial frame?

An inertial reference frame is either at rest or moves with a constant velocity. Non−inertial reference frames:− non−inertial reference frame is a reference frame that is accelerating either in linear fashion or rotating around some axis.