give at least 5 words that will describe "Newtonian or classical mechanics"

2.Classical mechanics is a physical theory describing the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars and galaxies. For objects governed by classical mechanics, if the present state is known, it is possible to predict how it will move in the future (determinism) and how it has moved in the past (reversibility).

3.Classical mechanics provides extremely accurate results when studying large objects that are not extremely massive and speeds not approaching the speed of light. When the objects being examined have about the size of an atom diameter, it becomes necessary to introduce the other major sub-field of mechanics: quantum mechanics. To describe velocities that are not small compared to the speed of light, special relativity is needed. In cases where objects become extremely massive, general relativity becomes applicable. However, a number of modern sources do include relativistic mechanics in classical physics, which in their view represents classical mechanics in its most developed and accurate form.

4.Newtonian physics, also called Newtonian or classical mechanics, is the description of mechanical events—those that involve forces acting on matter—using the laws of motion and gravitation formulated in the late seventeenth century by English physicist Sir Isaac Newton (1642–1727). Several ideas developed by later scientists, especially the concept of energy (which was not defined scientifically until the late 1700s), are also part of the physics now termed Newtonian.

5.Newtonian physics can explain the structure of much of the visible universe with high accuracy. Although scientists have known since the early twentieth century that it is a less accurate description of the physical world than relativity theory and quantum physics, corrections required for objects larger than atoms that move significantly slower than light are negligible. Since Newtonian physics is also mathematically simple, it remains the standard for calculating the motions of almost all objects from machine parts, fluids, and bullets to spacecraft, planets, and galaxies.

Explanation:

Using just a few equations, scientists can describe the motion of a ball flying through the air and the pull of a magnet, and forecast eclipses of the moon. The mathematical study of the motion of everyday objects and the forces that affect them is called classical mechanics. Classical mechanics is often called Newtonian mechanics because nearly the entire study builds on the work of Isaac Newton. Some mathematical laws and principles at the core of classical mechanics include the following:

Newton's First Law of Motion: A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force.

Newton's Second Law of Motion: The net force acting on an object is equal to the mass of that object times its acceleration.

Newton's Third Law of Motion: For every action, there is an equal and opposite reaction.

Newton's Law of Universal Gravitation: The pull of gravity between two objects will be proportional to the masses of the objects and inversely proportional to the square of the distance between their centers of mass.

Law of Conservation of Energy: Energy cannot be created nor destroyed, and instead changes from one form to another; for example, mechanical energy turning into heat energy.

Law of Conservation of Momentum: In the absence of external forces such as friction, when objects collide, the total momentum before the collision is the same as the total momentum after the collision.

Bernoulli's Principle: Within a continuous streamline of fluid flow, a fluid's hydrostatic pressure will balance in contrast to its speed and elevation.

Classical mechanics accurately describes the behavior of most "normal" objects. According to "The Dynamic Chemistry E-textbook" from the University of California, Davis Department of Chemistry, to be considered "normal," objects should be "larger than a molecule and smaller than a planet," close to room temperature and going at speeds significantly slower than the speed of light.