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Difference between revisions of "Gravity"

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===Meaning===
 
===Meaning===
 
A [[force]] that causes all [[Object|objects]] with [[mass]] to be [[Attract|attracted]] to each other.
 
A [[force]] that causes all [[Object|objects]] with [[mass]] to be [[Attract|attracted]] to each other.
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===Falling===
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==Key Stage 3==
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===Energy Transfers===
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====Accelerating====
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: When an [[object]] [[accelerate]]s towards the ground [[energy]] is [[Energy Transfer|transferred]] from the [[Gravitational Potential Energy Store|gravitational potential energy store]] of the [[object]] to the [[Kinetic Energy Store|kinetic energy store]] of the [[object]].
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====Decelerating====
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: When an [[object]] [[decelerate]]s away from the ground [[energy]] is [[Energy Transfer|transferred]] from the [[Kinetic Energy Store|kinetic energy store]] of the [[object]] to the [[Gravitational Potential Energy Store|gravitational potential energy store]] of the [[object]].
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===Forces===
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====Accelerating====
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: When an [[object]] [[accelerate]]s towards the ground '''gravity''' is causing a [[Mechanical Energy Transfer|mechanical energy transfer]].
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====Decelerating====
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: When an [[object]] [[decelerate]]s away from the ground '''gravity''' is causing a [[Mechanical Energy Transfer|mechanical energy transfer]].

Revision as of 17:10, 11 October 2018

Key Stage 2

Meaning

Gravity is a force that causes all objects to be attracted to each other.

About Gravity

Gravity is a non-contact force.
Gravity affects all objects.
Gravity pulls us down towards the centre of the Earth.
Gravity.png
If person A drops the cog it will fall towards the centre of the Earth. If person B drops the spanner it will fall towards the centre of the Earth.
Gravity is what keeps the Earth orbiting the Sun.
Orbit1.gif
The planets are pulled towards the sun by gravity.

Key Stage 3

Meaning

A force that causes all objects with mass to be attracted to each other.

Falling

Key Stage 3

Energy Transfers

Accelerating

When an object accelerates towards the ground energy is transferred from the gravitational potential energy store of the object to the kinetic energy store of the object.

Decelerating

When an object decelerates away from the ground energy is transferred from the kinetic energy store of the object to the gravitational potential energy store of the object.

Forces

Accelerating

When an object accelerates towards the ground gravity is causing a mechanical energy transfer.

Decelerating

When an object decelerates away from the ground gravity is causing a mechanical energy transfer.