Contact and non-contact forces
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14 Terms
What is a force
A push or pull that acts on an object due to the interaction with another object
What do all forces have
Magnitude
Direction
What type of quantity is force
Vector
Unit of force
Newtons (N)
2 categories of forces
Contact
Non contact
What is a contact force
Acts between objects physically touching
Examples of contact forces
Tension (in a rope)
Friction
Air resistance
Normal contact force
When does normal contact force happen
If two objects are directly touching
What are non contact forces
Acts between objects not physically touching
Examples of non contact forces
Gravitational force
Electrostatic force
Magnetic force
Example of gravitational force
Gravitational force attracts the international space station to earth and the earth to the space station
What is electrostatic force
The force between two charged objects
Why is electrostatic force a non contact force
The charged particles interact across a space
What is magnetic force
The force experienced by certain objects in a magnetic field
