The acceleration of motion is every proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
What is Newton's 2nd law?
100
G
What is the universal gravitational constant?
100
the gravitationally curved path of an object around a point in space
What is an orbit?
200
It causes changes in speed or direction of motion.
What is acceleration?
200
An object does not accelerate unless there is a net force
What is Newton's 1st law?
200
Every object in the universe attracts every other object with a force directed along the line of centers for two objects that is proportional to the product of their masses and inversely proportional to the square of the separation between the two objects
What is the universal law of gravity?
200
how long an orbiting body takes to complete one orbit
What is an Orbital period?
300
A force that causes a change in motion
What is an unbalanced force?
300
To every action there is always an equal and opposite reaction
What is Newton's 3rd law?
300
The force is in the radial direction and depends only on the distance between objects.
What is a central force?
300
An orbit that passes above or nearly above both poles of the planet on each revolution
What is an polar orbit?
400
The constant velocity of an falling object when the force of air resistance is equal in magitude and opposite in direction to the force of gravity
What is Terminal Velocity?
400
The tendency of an object to resist changes in motion.
What is Inertia?
400
When two objects are proportional to the mass of each object and inversely proportional to the square of the distance between the centers of the masses.
What is Gravitational Force?
400
satellites used for observation of distant planets, galaxies, and other outer space objects