Anyone who wants to prove we live on a spinning ball of water, with everything attached to this sphere with gravity.
Simply take a bowl of water placed on a table, let the bowl of water calm down like the above photo of this calm lake.
Then just film yourself moving the table with the bowl of water on it, while the bowl of water remains perfectly calm like it is while resting on the non moving table. Record your success at keeping the bowl of water perfectly at rest while moving the table.
Newton's laws of motion are three
physical laws that, together, laid the foundation for
classical mechanics. They describe the relationship between a body and the
forces acting upon it, and its
motion in response to those forces. More precisely, the first law defines the force qualitatively, the second law offers a quantitative measure of the force, and the third asserts that a single isolated force does not exist. These three laws have been expressed in several ways, over nearly three centuries, and can be summarised as follows:
First law
Second law
In an inertial frame of reference, the
vector sum of the
forces F on an object is equal to the
mass m of that object multiplied by the
acceleration a of the object:
F =
ma. (It is assumed here that the mass
m is constant – see
below.)
Third law
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
The three laws of motion were first compiled by
Isaac Newton in his
Philosophiæ Naturalis Principia Mathematica (
Mathematical Principles of Natural Philosophy), first published in 1687. Newton used them to explain and investigate the motion of many physical objects and systems. For example, in the third volume of the text, Newton showed that these laws of motion, combined with his
law of universal gravitation, explained
Kepler's laws of planetary motion.
Beautiful photographs BTW.