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8 CKPhysics is Fun
8th Physics is Fun CK - COMPLETE
| Term | Definition |
|---|---|
| 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. |