| A | B |
|---|
| force | a push or pull |
| friction | a force that acts in a direction opposite to the motion of the moving object |
| inertia | the property of matter that tends to resist any change in motion |
| 1st law of motion | an object at rest will remain at rest and an object in motion will remain in motion at constant velocity unless acted upon by an unbalanced force |
| 2nd law of motion | shows force, mass, and acceleration are related |
| newtons | force is measured in newtons; 1 equals the force required to accelerate on kilogram of mass at m/s/s |
| 3rd law of motion | that for every action, there is an equal and opposite reaction |
| falling objects | the acceleration of a falling object is due to the force of gravity between the object and the Earth |
| gravity | is 9.8 m/s/s; this means that for every second an object is falling, its velocity is increasing by 9.8 m/s/s |
| Newtons law of universal gravitation | all objects in the universe attract each other by force of gravity |
| weight | a measure of the force of gravity on an object; (w=m*g) weight=mass*acceleration due to gravity |
