1.
a push or pull exerted on an object
2.
sum of all of the forces that are acting on an object
3.
force that opposes the sliding motion between two touching surfaces
4.
attractive force between two objects that depends on the masses of the objects and the distance between them
5.
a region of space in which every point has a physical quantity, such as a force
6.
gravitational force exerted on an object
7.
states that an object moving at a constant velocity keeps moving at that velocity unless an
9.
tendency of an object to resist any changes in its motion
10.
states that the acceleration of an object
11.
in the same direction as the net force on the object, and that the acceleration equals the net force divided by its mass
12.
states that when one object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction
13.
force that opposes the motion of objects that move through the air
14.
the maximum speed an object will reach when falling through a substance, such as air
15.
fall describes the fall of an object on which only the force of gravity is acting
16.
a force that is directed toward the center of a curved or circular path
17.
states that energy cannot be created or destroyed
