Contact and non-contact forces Flashcards
What is a vector quantity
Something that has magnitude and direction
What is a scalar quantity
Something that only has magnitude
Eg of vector and scalar quantities
Vector:
F…, v…, d…, a…, m…
Scalar:
S…, d…, m…, t…, t…
Vector:
Force, velocity, displacement, acceleration, momentum
Scalar:
Speed, distance, mass, temp, time
Sort into vector and scalar:
Speed, velocity, force, time, momentum, mass, temp, displacement, acceleration, distance
Vector:
Force, velocity, displacement, acceleration, momentum
Scalar:
Speed, distance, mass, temp, time
What kind of velocity does something have if it’s travelling
backwards
A minus velocity
What is a force
A… or pull on an… caused by it … with something
A push or pull on an object caused by it interacting with something
What are the 2 types of forces
Contact and non-contact
What is a contact force
When … objects have to be… for a … to act
When 2 objects have to be touching for a force to act
What is a non contact force
Where objects don’t need to be touching for a force to act
Eg of contact and non-contact forces
Contact:
F…, a… r…, t…
Non-contact:
G…, e… f…, m…
Contact:
Friction, air resistance, tension
Non-contact:
Gravity, electrostatic forces, magnetic
Sort these into non contact and contact,
Air resistance, gravity, electrostatic, friction, tension, magnetic
Contact:
Friction, air resistance, tension
Non-contact:
Gravity, electrostatic forces, magnetic
What happens when 2 objects interact
There is a … produced on …
objects
There is a force produced on both objects
What is an interaction pair
A… of … that are … and opposite and act on …
interacting objects
A pair of forces that are equal and opposite and act on 2
interacting objects
What is newtons third law
For every force there is an equal and opposite one
