| A | B |
|---|
| force | any push or pull |
| friction | force that acts between materials & touch as they go by e. other. |
| inertia | the property of a body to resist change. |
| Law of Inertia | Newton's first law is actually called this. |
| N's 1st law or law of inertia | Any object tends to resist changes to its motion even if at rest. |
| kilograms | SI or metric unit of mass. |
| mass | the amount of matter (molecules & atoms) in an object. |
| weight | the force of gravity acting on an object. |
| mass (2) | a measure of inertia or an objects tendency to resist motion. (2) |
| Net force | the combination of all forces acting on an object. |
| Support force | the force that balances an objects weight. |
| Normal force | another name for a support force. |
| equilibrium | when net forces are zero, an object is at rest. |
| kilograms | 1000 grams |
