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Force Flashcards
Force
| Term | Definition |
|---|---|
| What is force | force can cause a moving object to move quickly, to move more slowly or to change direction in which it is moving. |
| what is the unit of force | newtons |
| what is weight | is the force pulling an object towards the center of the earth |
| what is mass | is the amount of matter in an object |
| what is a moment of force | Moment of Force simply refers to a force causing something to spin. |
| lever formula | Smaller force x larger distance = larger force x smaller distance |
| how to calculate pressure | pressure = force over area |
| units for pressure | 1. N/cm2 or N cm2 2. N/m2 or N m2 3. Pascal(Pa), which is another way of saying N/m2 |
| what is the meaning of 'work' | Work is done if a force results in an object moving a distance |
| unit of work | Joules |
| formula of 'Work' | Work=force x distance |
| what is the meaning of 'power' | power = work + done over time taken |
| what are balanced forces | If the force of an object is balanced the object remains at constant velocity |
| what are unbalanced forces | If the forces on an object are unbalanced the object accelerates |
| what is extension plotted against force | it is a graph that drawn on a graph page |
| what are examples of force | Gravitational force, Magnetic, electrical force |
| what is friction | the resistance that one surface or object encounters when moving over another. |
| what is a gravitational force | a gravitational force is the force that keeps the earth circling the sun |
| what is an electrical force | binds atoms together example ionic bonding |
| what is a magnetic force | An electric motor converts electrical energy into physical movement. Electric motors generate magnetic fields with electric current through a coil. |
| how can you prevent bad friction | rub vaseline or oil in places like underarms |
| what is a frictional force | allows cars to turn a corner |
| What is the law of an elastic body is directly proportionate to the force causing the extension | Hookes Law |
| What is Newton's first law | An object at rest tends to stay at rest and an object in motion tends to stay in motion tends to stay in motion unless acted upon by an unbalanced force |
| What is Newtons Second law | Force equals times acceleration F = ma Acceleration: a measurement of how quickly an object is changing speed. |
| What is Newtons Third law | For every reaction there is an equal and opposite reaction |
Created by:
20OMcCormack
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