Forces
A push or pull that acts on an object
What is force?
The motion of an object when it is falling solely under the influence of gravity
What is free fall?
He incorrectly proposed that a continual unbalanced force is required to keep an object moving at a constant speed
Who was Aristotle?
Newton's first law is also known as this law
What is the law of inertia?
This is the only force that can be either attractive or repulsive
What is electromagnetic force?
The force required to make an object with a mass of 1 kg accelerate at one meter per second-squared
What is a newton?
The tendency of an object to resist changes in its velocity
What is inertia?
He developed the concept of inertia
Who was Galileo?
This law describes what will happen to an object's acceleration when an unbalanced force acts on it
What is Newton's second law?
This force is responsible for holding atoms together
What is electromagnetic force?
A force that results when surfaces of objects rub against each other and opposes motion
What is friction?
This is calculated at 32 ft/s2
What is acceleration due to gravity?
He is responsible for the General Theory of Relativity which led to a different way of understanding gravity
Who was Albert Einstein?
This is defined as "mass x acceleration due to gravity," or mg
What is weight?
The strongest of the four fundamental forces
What is the strong (nuclear) force?
Friction that opposes motion once the motion has started. a.k.a. sliding friction
What is kinetic friction?
These two objects were dropped in Experiment 7.1
What is a brick and an egg?
His three laws accurately describe motion and the forces involved
Who was Isaac Newton?
This is defined as "mass x acceleration"
What is (net) force?
A subatomic particle theorized to to be among the basic units of matter making up protons and neutrons
What is a quark?
This kind of friction acts on objects moving through air
What is fluid friction?
This is a small force-carrying particle that quantum theorists postulate is responsible for the force of gravity
What is a graviton?
At the end of his days, he spent more time studying and writing about the prophecies of this Old Testament book than he did in charting the heavens
What is Daniel?
This states that for every action, there is an equal and opposite reaction
What is Newton's third law?
The weakest of the four fundamental forces
What is gravity?