Topic After Elctricity Flashcards
Def of speed
How fast something covers a distance
Speed has no
Direction
Force has a
Direction
Weight has
A direction
Acceleration
Rate of change of speed
Velocity
Speed and direction
Speed is the rate of change if
Distance
Velocity is the rate of change of
Displacement
Acceleration is the rate of change of
Velocity
Non contact forces
Gravitational force
Magnetic
Electro static
Force
Push or pull
Balanced forces won’t change objects speed or direction
Unbalanced forces will
Forces can change the shape of an object
Vector
Direction and magnitude
Scalar
Magnitude
Forces are a _____ quality
Vector
Speed is a ________ quality
Scalar
Newton’s first law
No change of speed unless acted on by an unbalanced force
Distance travelled formula
Speed times time
Force formula Newton’s second law
Mass x acceleration .
Newton’s third law
Evert action has an equal and opposite reaction force
Forces are represented by
Arrows
We can calculate resultant forces by adding
Arrows together graphically
Resultant force def
Sum of all forces acting upon an object
Charge flow =
Current (I) x time (t)
