click below
click below
Normal Size Small Size show me how
Force and Motion-2
Force and Motion (Part 2 of 2)
Term | Definition |
---|---|
STATIC FRICTION | Friction existing between surfaces of objects at rest There is GREATER friction between rough surface than smooth surface |
AIR FRICTION | Occurs due to the object moving through the air Molecules of air moved aside Larger the object the more air has to be moved aside--greater the air friction |
SLIDING FRICTION | RUBBING of surfaces Objects already in motion will slow down UNLESS additional force applied |
ROLLING FRICTION | Friction between round objects i.e, Automobile (car) wheel and the road |
FIRST LAW OF MOTION | Object at rests; STAYS at rest Object in motion; STAYS in motion |
INERTIA | When properties of matter resist changes in motion 1st Law of Motion |
SECOND LAW OF MOTION | Force = MASS x ACCELERATION Amount of force needed to change objects motion or rest state Depends on mass of object & acceleration required |
THIRD LAW OF MOTION | 1st object EXERTS force on 2nd object 2nd object EXERTS EQUAL and opposing force on 1st object |
ACTION/REACTION FORCES | For every action Opposite and equal reaction 3rd Law of Motion |