1.
when two or more forces act on an object at the same time
2.
the tendency of matter to stay in motion or if at rest to stay at rest
3.
the tendency to float in a fluid
4.
an attractive force that acts upon all objects that depend on mass and closeness of the object
7.
rate of the change of distance over time
8.
rate of the change of displacement over time
9.
the force that opposes motion
10.
rate of the change in velocity over time
11.
an object slowing over time
13.
force equal mass times acceleration
14.
law of action and reaction
15.
any kind of energy due to motion
16.
energy stored in an object due to a force that temporarily changes its shape
17.
any kind of stored energy
18.
energy stored in an object due to its position in a gravitational field
19.
the sum of the energy that is possessed by an object
20.
energy that is due to an object's motion or due to its position
21.
energy stored in bonds of atoms and molecules
