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Forces, Energy & Mot
science vocab- Physics
| Question | Answer |
|---|---|
| motion | an objects change in position relative to a reference point |
| speed | the distance traveled divided by the time interval during which the motion occurred |
| 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 changes |
| force | a push or a pull exerted on an object in order to change the motion of the object; force has size and direction |
| newton | the SI unit for force |
| net force | the combination of all of the forces acting on an object |
| friction | a force that opposes motion between objects that is due to their masses |
| gravity | a force of attraction between objects that is due to their masses |
| Terminal Velocity | the constant velocity of a falling object when the force of air resistance in equal in magnitude an opposite in direction to the force of gravity |
| Free Fall | the motion a body when only the force of gravity is acting on the body |
| Projectile Motion | the curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth |
| Inertia | the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the objects |
| Energy | the capacity to do work |
| Kinetic Energy | the energy of an object that is due to the object’s motion |
| Potential Energy | the energy that an object has because of the position, shape, or condition of the object |
| Mechanical Energy | the amount of work an object can do because of the object’s kinetic and potential energies |
| Energy Conservation | a change from one form of energy to another |
| Law of Conservation | the law that states that energy cannot be created or destroyed but can be changed from one form to another |
| Nonrenewable Resource | a resource that forms at a rate that is much slower than the rate at which it is consumed |
| Fossil Fuel | a nonrenewable energy resource formed from the remains of organisms that lived long ago |
| Renewable Resource | a natural resource that can be replaced at the same rate at which that resource is consumed |
Created by:
RABBARNETT
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