Forces And Interactions Flashcards
Scalar
A quantity that only has magnitude
Mass, time, speed, temperature, energy, etc.
Vector
A quantity with a magnitude and a direction
Force, velocity, momentum, etc.
Arrows can be used to show what?
The length accords to the magnitude of the force
The direction accords to the direction of the force
Force definition
Push or pull
Stretch, squash, turn, etc.
Contact force definition
Exerted force between 2 objects when they touch
Friction, air resistance, tension, normal contact force, etc.
Non contact force definition
Exerted force between two objects without touching
Gravity, electrostatic forces, magnetic forces, etc.
Resultant force definition
The overall effect of all forces acting upon an object
Gravitational field strength definition
Gravity exerted on an object
9.8N/kg
Weight definition
Force acting on an object due to gravity
Newtons (N)
Mass defintion
How much matter
Kilograms (Kg)
Weight = ?
Weight = Mass X Gravitational Field Strength
Work done = ?
Work done = Force X Distance Moved
When work is done, energy is transferred
