2.
A group of parts that work together as a whole
3.
a diagram showing all the forces acting on an object
4.
The sum of all forces acting on an object
6.
stays at rest until acted upon
7.
The tendency of an object to resist a change in motion
9.
the force of gravity on an object
10.
The force acting per unit mass
11.
The support force acting on an object
12.
The state of being without detectable weight
13.
a force that opposes the motion of an object through a fluid
14.
the greatest velocity a falling object reaches
15.
forces that are equal in strength, but opposite in direction
16.
Every action has an equal and opposite reaction
17.
stress that occurs when forces act to stretch an object
18.
contact force exerted by a surface on another object
