Force and motion. Newton’s three laws of motion

Relationship between force and motion

The physics of forces and motion is one of the most important branches of physics. It focuses on studying how objects move in response to forces acting on them.

Newton’s three laws of motion

Newton’s laws are three fundamental principles that describe the motion of objects in space and are the basis of classical physics. These laws are fundamental to the understanding of classical physics and apply in a wide variety of situations, from the motion of planets in space to the behavior of everyday objects on Earth.

Newton’s three laws of motion are::

First law. Law of inertia

Newton’s first law of motion, also known as the law of inertia,, states that an object at rest will remain at rest and an object in motion will continue to move with constant velocity in a straight line unless a net force acts on it.

Second law. Fundamental law of dynamics

Newton’s second law of motion, also known as the fundamental law of dynamics, states that the net force acting on an object is equal to its mass multiplied by its acceleration, that is, F = m x a. This means that the greater the force applied to an object, the greater its acceleration and the greater its mass, the harder it is to accelerate it.

Third law. Law of action and reaction

Newton’s third law of motion also known as the law of action and reaction,  states that for every action, there is an equal and opposite reaction. This means that when one object exerts a force on another object, the second object exerts a force of equal magnitude and opposite direction on the first object.