Force
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| 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.
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| what is the unit of force | newtons
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| what is weight | is the force pulling an object towards the center of the earth
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| what is mass | is the amount of matter in an object
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| what is a moment of force | Moment of Force simply refers to a force causing something to spin.
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| lever formula | Smaller force x larger distance = larger force x smaller distance
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| how to calculate pressure | pressure = force over area
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| 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
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| what is the meaning of 'work' | Work is done if a force results in an object moving a distance
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| unit of work | Joules
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| formula of 'Work' | Work=force x distance
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| what is the meaning of 'power' | power = work + done over time taken
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| what are balanced forces | If the force of an object is balanced the object remains at constant velocity
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| what are unbalanced forces | If the forces on an object are unbalanced the object accelerates
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| what is extension plotted against force | it is a graph that drawn on a graph page
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| what are examples of force | Gravitational force, Magnetic, electrical force
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| what is friction | the resistance that one surface or object encounters when moving over another.
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| what is a gravitational force | a gravitational force is the force that keeps the earth circling the sun
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| what is an electrical force | binds atoms together example ionic bonding
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| 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.
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| how can you prevent bad friction | rub vaseline or oil in places like underarms
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| what is a frictional force | allows cars to turn a corner
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| What is the law of an elastic body is directly proportionate to the force causing the extension | Hookes Law
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| 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
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| What is Newtons Second law | Force equals times acceleration
F = ma
Acceleration: a measurement of how quickly an object is changing speed.
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| What is Newtons Third law | For every reaction there is an equal and opposite reaction
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