The shape of an object or change its motion or state of rest.
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What is the unit of force?
Newton (N).
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What happens when two objects interact?
They always exert equal and opposite forces on each other.
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What happens if object A exerts a force on object B?
Object B exerts an equal and opposite force on object A.
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What are the equal and opposite forces that objects always exert on each other sometimes called?
'Action and reaction' forces.
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What happens if a car hits a barrier?
The car exerts a force on the barrier and the barrier exerts a force on the car that is equal in size and in the opposite direction.
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What happens if you place a book on a table?
The weight of the book will act vertically downwards on the table, the table will exert an equal and opposite reaction force upwards on the book.
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What happens when a car is being driven forwards?
There is a force from the tyre on the ground pushing backwards, there is an equal and opposite force from the ground on the tyre which pushes the car forwards.
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What s the SI unit of force
Newtons (N).
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In what direction does the force of weight always act?
Downwards (or towards the centre of the Earth).
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**LOOK UP DIAGRAM OF DRIVING FORCE**
**IT IS IMPORTANT TO UNDERSTAND THAT ACTION AND REACTION FORCES ACT ON DIFFERENT OBJECTS. REMEMBER THAT FORCES HAVE BOTH SIZE AND DIRECTION**
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Other cards in this set
Card 2
Front
What is the unit of force?
Back
Newton (N).
Card 3
Front
What happens when two objects interact?
Back
Card 4
Front
What happens if object A exerts a force on object B?
Back
Card 5
Front
What are the equal and opposite forces that objects always exert on each other sometimes called?
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