An object's resistance to changes in motion
What is inertia?
"s = d/t" is the formula to solve for ...
What is speed?
Fill in the blank: ______ causes acceleration
What is force?
Every force is part of a(an) _______ between one thing and another
What is an interaction?
The sum of two or more vectors is called the . . .
What is the resultant?
Aristotle attributed this class of motion to the Moon
What is natural motion?
This what we call the speed at any instant.
What is instantaneous speed?
The quantity of matter in an object
What is mass?
Any resultant vector can be resolved into two ________ vectors perpendicular to each other.
What is a component?
The name of the man who first proposed the theory of heliocentrism
Who was Nicolaus Copernicus?
The theory illustrated on the left is called ________. The theory illustrated on the right is called _______.
What is geocentrism (left)? What is heliocentrism (right?
Fill in the blanks (it's the same word 3x): When you sit on a chair, your speed is zero ____ to the Earth but 30 km/s ____ to the Sun. Motion is _____.
What is relative?
The fundamental unit of mass
What is the kilogram?
Newton’s third law of motion is the law of _______ and ________.
What is action and reaction?
Aristotle believed that different rules of physics apply to the . . .
What are the heavens? (or heavenly bodies)
Finish the sentence: “Every object continues in a state of rest or of uniform speed in a straight line ___ ___ ___ ____ __ _____ ___ _____.”
unless acted on by a nonzero net force
An object's speed and direction of motion is called . . .
What is velocity?
The quantity of space an object occupies
What is volume?
Finish the sentence: I can’t push on a wall unless . . .
. . . the wall pushes on me
According to Aristotle, ______ motion is imposed.
What is violent (motion)?
"∑F = 0" is called the ____ rule
What is the equilibrium rule?
Motion under the influence of gravity alone is called . . .
What is free fall?
The resistive force that opposes the motion or attempted motion of an object either past another object with which it is in contact or through a fluid
What is friction?
Action: Earth pulls on ball being dropped
Identify the reaction
Reaction: ball pulls on Earth
Every object continues in a state of rest or of uniform speed __ __ ____ ___ unless acted on by a nonzero net force
in a straight line
This is a push or a pull
What is force?
This is the gain in speed per second for a freely falling object.
What is 10 m/s (each second)?
The acceleration of an object is ______ proportional to the net force acting on the object, is in the direction of the net force, and is _______ proportional to the mass of the object
directly, inversely
The cannonball accelerates more than the recoiling cannon because . . .
The cannonball is less massive
An upward force opposite to the force of Earth's gravity
What is a support (or normal) force?
Velocity is an example of this kind of quantity
What is a vector quantity?
Finish the sentence: A feather and a coin fall at equal accelerations in a ______.
What is a vacuum?
Acceleration ~ net force. The "~" stands for what?
~ stands for "is directly proportion to"
Which of Newton's three laws does this formula represent?
What is Newton's second law?
An airplane flies at a constant speed in a horizontal straight line path. In other words, the flying plane is in ____ _____.
What is dynamic equilibrium?
The state of an object or system of objects for which there are no changes in motion
What is (mechanical) equilibrium?
We use the formula d = ½gt2 to solve for . . .
What is distance fallen in free fall?
Air drag is an example of _____ friction.
What is fluid friction?
The process of determining the components of a vector
What is vector resolution?
____ friction is somewhat greater than and more difficult to overcome than ____ friction
What is static, sliding?