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Lesson 3 - Gravity and Motion
Chapter 1 Earth, Moon, and Sun
Terms in this set (20)
a push or pull
the attractive force between objects
Law of Universal Gravitation
the scientific law that states that every object in the universe attracts every other object
the amount of matter in an object
a measure of the force of gravity on an object
the tendency of an object to resist a change in motion
Newton's First Law of Motion
The scientific law that states that an object at rest will stat at rest and an object in motion will stay in motion wit ha constant speed and direction unless acted on by a force
The measure of force on an object is its ___.
The ___ of two o jects and their distances from each other determine the gravitational force between them.
An object with greater ___ is more difficult to stop or start.
___ attracts all objects toward each other.
The amount of matter in an object is its ___.
Earth's gravity pulls the moon ___.
Gravity decreases to ___ of its original value if the distance between two objects doubles.
Newtons law of ___ graviations states that every object in the universe attracts every other object.
Inertia and ___ combine to keep Earth in orbit around the sun and the moon in orbit around Earth.
Newton's first law of ___ says that an object at rest will stay at rest and an object in motion will stay in motion unless acted on by a force.
All objects are attracted to each other by the force of ___.
The strength of the force of gravity depends on ___.
the masses of the objects and the distance between them.
The tendency of a moving object to continue moving in a straight line or a stationary object to remain in place is called ____
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