science
Terms
undefined, object
copy deck
- speed
- the distance traveled divided by the time interval during which the motion occured
- velocity
- the speed of an object in a particular direction
- acceleration
- the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change
- force
- a push or pull exerted on an object in order to change the motion of the object; force has size and direction
- newton
- the S1 unit for force (symbol, N)
- net force
- the combination of all of the forces acting on an object
- friction
- a force that opposes motion between two surfaces that are in contact
- kinetic friction
- friction between two moving surfaces
- static friction
- when a force is applied to an object but does not cause the object to move
- gravity
- a force of attraction between objects that is due to their masses
- mass
- the amount of matter in an object
- weight
- a measure of the gravitational force exerted on an object, its value can change with the location of the object in the universe
- average speed
- total distance/total time
- average acceleration
- final velocity - starting velocity/ time it takes to change velocity