P2 Forces Revision Key Words

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  • Created by: manufanr
  • Created on: 17-10-13 11:33
Force
A force can change the motion of an object (in newtons, N)
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Newton
The unit of force (N)
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Resultant force
The combined effect of the forces acting on an object
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Mass
The quantity of matter in an object; a measure of the difficulty of changing the motion of an object (in kilograms, kg)
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Stopping Distance
Thinking Distance + Braking Distance
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Thinking Distance
The distance travelled by the vehicle in the time it takes the driver to react
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Braking Distance
The distance travelled by a vehicle during the time its brake acts
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Weight
The force of gravity on an object (in newtons, N)
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Gravitational Field Strength
The force of gravity on an object of mass 1kg (in newtons per kilogram, N/kg)
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Drag force
A force opposing the motion of an object due to fluid (e.g. air) flowing past the object as it moves
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Terminal Velocity
The velocity reached by an object when the drag force on it is equal and opposite to the force making it move
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Elastic
A material is elastic if it is able to regain its shape after it has been squashed or stretched
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Directly Proportional
A graph will show this if the line of best fit is a straight line through the origin
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Limit of proportionality
The limit for Hooke's Law applied to the extension of a stretched spring
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Hooke's Law
The extenstion of a spring is directly proportional to the force applied, provided its limit of proportionality is not exceeded
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Other cards in this set

Card 2

Front

Newton

Back

The unit of force (N)

Card 3

Front

Resultant force

Back

Preview of the front of card 3

Card 4

Front

Mass

Back

Preview of the front of card 4

Card 5

Front

Stopping Distance

Back

Preview of the front of card 5
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