|
|
2
|
produces no motion
|
3
|
push or pull
|
5
|
produces change in motion
|
6
|
friction between two moving surfaces
|
7
|
force that opposes motion between two surfaces that are in contact
|
8
|
friction that has no movement
|
9
|
a force of attraction between objects due to their masses
|
10
|
a measure of the amount of matter in an object
|
11
|
combination of all of the forces acting on an object
|
12
|
named after issac newton
|
|