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:
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:
Friction, air resistance, tension
Non-contact:
Gravity, electrostatic force
Sort these into non contact and contact,
Air resistance, gravity, electrostatic, friction, tension, magnetic
Contact:
Air resistance, friction, tension
Non contact!
Magnetic, gravity, electrostatic
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 Newton’s third law
For every force there is an equal and opposite one
