 # Newton's Laws Of Motion

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Newton developed this law of motion has significant mathematical and physical elucidation that are needed to understand the motion of objects in our universe. Newton introduced the three laws in his book Philosophiae naturalis principia mathematica (Mathematical Principles of Natural Philosophy), which is generally referred to as the Principia. He also introduced his theory of universal gravitation, thus laying down the entire foundation of classical mechanics in one volume in 1687. These laws define the motion changes, specifically the way in which those changes in motion are related to force and mass. There are three laws of motion which were introduced by Sir Isaac Newton which are Newton’s First Law , Newton’s Second Law and Newton’s…show more content…
Newton 's First Law of Motion states that a force must act upon it in order for the motion of an object to change . This is a concept which generally called as inertia. This law also states that if the net force which is the vector sum of all forces acting on an object is zero, then the velocity of the object is constant. Velocity is a vector quantity which indicates both the object 's speed and the direction of its motion. Hence, the statement that states the object 's velocity is constant is a statement that both its speed and the direction of its motion are constant. This is also known as uniform motion which means if an object continues to do whatever it happens to be doing unless a force is exerted upon it. If it is at rest, it continues in a state of rest and if an object is moving, it continues to move without changing its speed. Changes in motion must be foisted against the tendency of an object to retain its state of motion. In the absence of net forces, a moving object tends to move along a straight line path indefinitely.
The first law can be stated mathematically when the mass is a non-zero
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That is, a particle initially at rest or in uniform motion in the preferential frame Φ continues in that state unless compelled by forces to change it.”
APPLICATIONS FROM NEWTON’S FIRST LAW OF MOTION.
a) AIRPLANES. When the airplane flying at a constant altitude , aircraft holds constant airspeed if thrust and drag are equal. If thrust is increased , the aircraft accelerates and the airspeed increases. After that , the drag depends on airspeed , thus the drag increases. When drag is again equal to thrust , the aircraft no longer accelerates but holds a new , higher , and constant airspeed. This explains that every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces on it.
b) CAR. Newton’s First Law also known as Law Of Inertia. Inertia explains why you move forward in your seat when a car stops suddenly. When the car stops , inertia keeps you moving forward. A force such as the pull of a seat belt , is required to change