# Pressure

• Created by: Daniella
• Created on: 29-04-18 15:45
acceleration
The amount by which speed increases in one second
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Atmospheric pressure
Pressure caused by the collisions of air molecules that produce a force on an area
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Average speed
The total distance traveled in the total time taken for a complete journey
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Centre of gravity
The point in an object where the force of gravity seems to act
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Centre of mass
The point of an object where the mass of an object seems to act
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Compressed
Squashed into a smaller space
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Density
The mass of a material in a certain volume
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Distance-time graph
A graph that shows how far an object moves each second
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Gas pressure
The force exerted by air particles when they collide with a surface
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Incompressible
Cannot be compressed (squashed)
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Instantaneous speed
The speed at a particular moment
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Law of moments
An object is in equilibrium if the clockwise moments equal anticlockwise moments
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Liquid pressure
The pressure produced by the collisions of particles in a liquid
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Metres per second
A unit of speed
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Moment
A measure of the ability of a force to rotate an object about an pivot
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Newton metres
The unit of moment
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Newtons per metre squared
A unit of pressure
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Pivot
The point about which a lever or see-saw balances
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Pressure
A force exerted on a certain area
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Relative motion
The difference between the speeds of two moving objects, or of a moving and stationary object
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Speed
A measure of how far something travels in a given time
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## Other cards in this set

### Card 2

#### Front

Atmospheric pressure

#### Back

Pressure caused by the collisions of air molecules that produce a force on an area

Average speed

### Card 4

#### Front

Centre of gravity

Centre of mass