# Shared Flashcard Set

## Details

Chapter 1 Matter in Motion
measuring motion, forces, friction & Gravity
22
Physics
10/01/2007

Term
 MOTION
Definition
 an objects change in position realtive to a reference point
Term
 SPEED
Definition
 The distance traveled divided by the time taken for motion to occur
Term
 Label for Speed
Definition
 meters per secondm/s
Term
 VELOCITY
Definition
 speed of an object in a particular direction
Term
 ACCELERATION
Definition
 rate at which velocity changes over time
Term
 FORMULA FOR ACCELERATION
Definition
 Final velocity - initial velocity__________________________________ Time Taken
Term
 Label for ACCELERATION
Definition
 meters per second per secondm/s/s
Term
 FORCE
Definition
 a push or pull exerted on an objet in order to change the motion of the object; has size and direction
Term
 NEWTON
Definition
 the SI unit for force. Symbol=N
Term
 NET FORCE
Definition
 the combination of all forces acting on an object
Term
 BALANCED FORCE
Definition
 net force = 0 newtonsdoes not cause change in motion of objectex. house of cards light hanging from ceiling
Term
 UNBALANCED FORCE
Definition
 net force NOT = to 0 newtonscauses a change in motion, speed &/or direction of object ex. kicking a ball
Term
 FRICTION
Definition
 a force that opposes motion between 2 surfaces that are in contact
Term
 KINETIC FRICTION
Definition
 friction between moving surfaces
Term
 2 FACTORS THAT AFFECT FRICTION
Definition
 1. amount of force applied2. roughness of surfaces in contact
Term
 SLIDING KINETIC FRICTION
Definition
 kinetic friction where the 2 surfaces slide past eachotherex. pushing a box across the floor
Term
 ROLLING KINETIC FRICTION
Definition
 one surface rolling over the other usually via wheels.ex. bicycle any mode of transportation w/ wheels
Term
 STATIC FRICTION
Definition
 when a force is applied to an object but the object DOES NOT move.*this disappears as soon as the object begins to move*
Term
 LUBRICANT
Definition
 substances applied to surfaces to reduce friction between the 1 surfaces
Term
 GRAVITY
Definition
 force of attraction between objects that is due to their masses
Term
 LAW OF UNIVERSAL GRAVITATION
Definition
 *describes the relationship between gravitational force, mass and distance*Isaac Newton*force increases as mass increases*force decreases as distance increases
Term
 WEIGHT
Definition
 measure of the gravitational force exerted on an object; value can change depending on location of the object in the universe
Supporting users have an ad free experience!