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# 8 CKPhysics is Fun

### 8th Physics is Fun CK - COMPLETE

TermDefinition
Speed the distance traveled in a certain amount of time; rate of movement; how fast an object is moving
Net force all the forces on an object added together
Air resistance the force exerted by air against objects that are moving through the air
Mass the amount of matter in an object
Friction the force that occurs between surfaces that are in contact with one another
Air Resistance Friction caused by surface area of an object coming in contact with air, causing the object to slow down
Newton the force needed to accelerate a 1kg. object by 1 meter per second every second
Weight a measure of the force of gravity on an object
Newton’s Third Law of Motion Every action has an equal and opposite action
Inertia -the tendency of an object to remain at rest or in motion unless a force acts upon it
Resiliency when an object springs back to its original form
Unbalanced forces when there is a net force other than zero – movement takes place
Balanced forces when the net force is zero – no movement takes place
.Gravity the attractive force exerted by a body on all other objects; the force that pulls objects towards earth
Friction The force of resistance between two moving objects
Elasticity when an object reverts to an original shape after distortion; highly flexible
Action force the initial force exerted in a force pair
Force A push or pull on an object that causes motion or change in motion
Reaction force the force exerted in response to an action force
Velocity The rate of motion in a particular direction
Acceleration The rate at which velocity changes over time
Acceleration of Gravity “g.”-The Earth’s gravitational force causes a falling object to continue to speed up or accelerate. This acceleration of gravity is called “g” and is equal to about 32 feet per second every second.
Created by: artisteacher