Force and motion Flashcards
Force
A push or pull
Net force
The overall force on a object
Balanced force
Forces acting on a object with a net force of zero
Unbalanced force
Forces acting on a object that cause the net force to be zero
Centripetal
The acceleration of an object in a circular motion
Newton
The si unit of force
Gravity
The attractive force between two objects. Proportional to gravity
Mass
The total matter in a object
Weight
A measure of the gravitational force exerted on a object
Work
The action that result from doing something.work = force • distance
Friction
A force that opposes motion between two surfaces that are touching each other
Rolling
Wheel moving rolling over another surface
Static
Two objects at rest
Sliding
One object sliding over another
Fluid
Solid moving through a liquid or gas
Motion
An objects change in position over time when compared to reference point
Speed
How far a object travels in a certain amount of time
Average speed
A measure of the distance traveled in a given period of time
Constant speed
Movement at a fixed constant distance per unit of time
Velocity
The rate at which a object moves in a given direction
Acceleration
The rate at which the speed or direction of an object (velocity ) changes. Acceleration may be positive or negative
