Term | Definition |
---|---|
Force | a push or pull |
Agent | object that produces/has the force |
Receiver | object that gets the force |
Effect | what happens |
Contact Force | force has to touch the object |
Non Contact Force | force doesn't touch the object |
Motion | an object changes position over time |
Opposing Forces | forces that work against each other |
Balanced Forces | forces that work against each other but are equal in size and have no motion |
Unbalanced Forces | forces that work against each other and are unequal in size and create motion |
Spring Scale | measuring force in Newtons |
Newton | measuring unit for force |
Magnitude | size of something |
Vectors | a simple diagram showing force with arrows |
Net Force | force result after two forces work on an object (total) (- from opposing) (+ for same) |
Gravity | a force of attraction between objects hat is due to their masses |
Isaac Newton | discovered gravity in the summer due to an apple falling on his head |
Attractive Force | forces that pull objects to themselves |
Weight | a measure of the gravitational for exerted on an object |
Mass | the amount of matter something is made of |
Friction | two forces make contact, Tool: spring scale Unit: Newtons |
Rolling Friction | one round surface makes contact |
Sliding Friction | two surfaces rub/slide across |
Static Friction | STAY STILL : stops movement |
Fluid Friction | one surface must be either liquid or air |
Speed | how fast an object is moving, S= D divided by T |
Velocity | speed plus direction, V= S plus Direction |
Acceleration | a change in Velocity final V – staring V divided by time it took to change |
Momentum | power an object has M= M * V |
Newtons First Law Of Motion | an object at rest will stay at rest, an object in motion will stay in motion, until acted upon by a force |
Newtons Second Law Of Motion | acceleration of an object depends on mass and force |
Newtons Third Law Of Motion | one object exerts a force on another object, exerts a force right back |