Contact & Non-Contact Forces (Edexcel GCSE Physics Combined Science): Flashcards
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Practise the cards
15 cards from this deck
Definition of a force
Definition of a force
A push or pull due to interaction with another object
Force quantity type (has magnitude & direction)
Force quantity type (has magnitude & direction)
Vector quantity
Unit of measurement for force
Unit of measurement for force
Newtons
What are contact forces?
What are contact forces?
Forces where two objects are physically touching
Examples of contact forces
Examples of contact forces
Tension, friction, air resistance
Direction of air resistance on a skydiver
Direction of air resistance on a skydiver
Upwards
Requirement for normal contact force
Requirement for normal contact force
Two objects must be in direct contact
Normal contact force direction on lamp from table
Normal contact force direction on lamp from table
Upward
What are non-contact forces?
What are non-contact forces?
Forces where two objects are physically separated
What does gravitational force do?
What does gravitational force do?
Attracts all objects to other objects
Electrostatic force between opposite charges
Electrostatic force between opposite charges
Attraction
Electrostatic force between same charges
Electrostatic force between same charges
Repulsion
What is magnetic force?
What is magnetic force?
Force experienced by objects in a magnetic field
Normal contact force direction relative to contact
Normal contact force direction relative to contact
Opposite direction, normal to planes of contact
What causes friction?
What causes friction?
Surfaces and their roughness when moved in contact