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Trivia For April 14, 2026
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It's themed Tuesday! Today's questions will all be about...
Philosophiæ Naturalis Principia Mathematica
Question 1:
Fill in the blank: Principia laid the foundation of classical mechanics, describing Newton's laws of motion and his law of universal _______.
Newton's theory describes gravity as a force and states that every particle attracts every other particle in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers of mass.
Question 2:
Although best remembered today for the diary he kept of Restoration-era London, this man also signed the imprimatur on Principia's title page in his role as President of the Royal Society.
In addition to his role in publishing the book, Newton and Pepys are also linked through a probability problem that arose out of correspondence between them about whether whether one is more likely to roll at least one six with six dice, two sixes with twelve dice, or three sixes with eighteen dice.
Question 3:
Newton's Second Law can be represented by the equation F = ma. What does F represent?
The equation is Force equals mass times acceleration. It explains that an object's acceleration is directly proportional to the net force applied to it and inversely proportional to its mass.
Question 4:
Fill in the blank: The conservation of _ can be implied from Newton's Third Law. ("For every action, there is an equal and opposite reaction.")
In addition to matter, force fields will also conserve momentum. Properly defined, momentum holds in quantum mechanics as well.
Question 5:
What physical property is described by Newton's First Law, which can be stated as "A body remains at rest, or in motion at a constant speed in a straight line, unless it is acted upon by a force"?
Newton defined inertia as "the vis insita, or innate force of matter, is a power of resisting by which every body, as much as in it lies, endeavours to persevere in its present state, whether it be of rest or of moving uniformly forward in a right line."
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