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===About Collisions===
: Two [[object]]s which are moving may [[collide]] with one another.
: When one [[object]] is [[stationery]] the [[object]] which is moving is said to [[collide]] with an [[object]] that is not moving. For example I '''collided''' with a lamppost, the lamppost did not '''collide''' with me.
==Key Stage 4==
===About Collisions===
: Two [[object]]s which are moving may [[collide]] with one another.
: When one [[object]] is [[stationery]] the [[object]] which is moving is said to [[collide]] with an [[object]] that is not moving. For example I '''collided''' with a lamppost, the lamppost did not '''collide''' with me.