2.
The sum of all of the forces acting on an object
3.
The force that opposes the sliding motion of two surfaces that are touching each other
4.
An attractive force between any two objects that depends on the masses of the objects and the distance between them
5.
A region of space that has a physical quantity at every point
6.
The gravitational force exerted on an object is the object's______
7.
States that an object moves at a constant velocity unless an unbalanced force acts on it
8.
The tendency of an object to resist any change in its motion
9.
States that an object's acceleration is in the same direction as the net force on the object and is equal to the net force exerted on it divided by its mass
10.
States that when one exerts a force on a second object
11.
A friction-like force that opposes the motion of objects that move through the air
12.
The maximum speed an object will reach when falling through a substance, such as air
13.
If gravity is the only force acting on an object, the object is said to be in ____
14.
A force exerted toward the center of a center of a curved path
15.
If no external forces act on a group of objects, their total momentum does not change
