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force and motion
Force and Motion for sixth grade
Question | Answer |
---|---|
force | A push or a pull |
Friction | A force that oposes motion between two surfaces producing thermal energy |
Gravity | The force of attraction between objects that is due to their masses. It can affect the position of an object or the direction of its motion. |
Inertia | The tendency of all objects to resist any change |
Motion | When an object changes position in relation to reference point over a period of time. |
Net force | The force that results from combining all the forces exerted on an object |
Newton | term or unit used to express force. |
Speed | he rate at which an object moves; need distance and time to calculate |
Velocity | The speed of an object in a particular direction. |
Work | When a force causes an object to move in the direction of the force |
Relative motion | When you compare one objects motion to another objects motion |
Balanced force | A net force of zero |
Unbalanced force | When the net force on an object isn't zero. It produces a change in motion. |
Decelerate | a decrease in speed |
Centripetal force | acceleration that occurs in circular motion. |
Momentum | An object in motion has a hard time slowing down once its in motion. |
reference point | A fixed point on Earth that can be used to describe a distance or direction. |