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The Reason Why Physics is Important

"Understand The World of Motion"

Newton's Third Law of Motion

Newton's Third Law of Motion

In chapter 4 and 5, Sir Isaac Newton first presented his third law of motion. His third law states that for every action (force) in nature there is an equal and opposite reaction (force). For aircraft, the principal of action and reaction is very important. It helps to explain the generation of lift from an airfoil. In this problem, the air is deflected downward by the action of the airfoil, and in reaction the wing is pushed upward.

grc.nasa.gov
Law of Force and Acceleration - Newton's Second Law of Motion - Physics Video by Brightsto

Law of Force and Acceleration - Newton's Second Law of Motion - Physics Video by Brightsto

Physics video on Newton's Second Law of Motion, also called the Law of Force and Acceleration. This law states that 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. In this entire discussion, the emphasis has been on the net force. The acceleration is directly proportional to the net force; the net force equals mass times acceleration; the acceleration in the same direction as the net force; an acceleration is produced by a net force. The NET FORCE. It is important to remember this distinction. Do not use the value of merely "any 'ole force" in the above equation. It is the net force that is related to acceleration.

brightstorm.com
Position vs. time graphs

Position vs. time graphs

in chapter 3, we learned how to read a position vs. time graph. Using the graph to determine displacement, distance, average velocity, average speed, instantaneous velocity, and instantaneous speed. You draw a tangent line at any point on a curve to get the instantaneous slope at that point. You can also use calculus to find the slope of that tangent line. . So this graph represents the motion of an object.

khanacademy.org
Newton's Laws of Motion

Newton's Laws of Motion

In chapter two, Isaac Newton was a primary exponent in our physics book. Newton composed the "Law of Inertia" and elaborated on the principle of motion. Another topic Newton carried out was force, which is a push or pull. In regards to forces, he established balanced and unbalanced forces.

grc.nasa.gov
Why Study Physics?

Why Study Physics?

If you have a passion for understanding how things work and enjoy scientific experiments and mathematics, then you should study physics.
Physics is the basic of science and is the root to understanding biology. Physics informs you about why objects move, change direction, and stay in motion. A deep understanding of Physics leads to a deep understanding of how the objects in the world operates.

aps.org