paper 2 forces Flashcards
vector quantities
have size and direction
scalar quantities
have size( magnitude) only
vector examples
displacement
weight
force
velocity
aCCELERATION
MOMENTUM
scalar quantities
mass
temperature
speed
energy
distance
time
force
a push or a pull that acts on an object due to the interaction with another object
contact forces
forces that are physically touching
non contact forces
occurs when the two objects are not touching
gravitational field strength(g)
9.8N per kg (on earth()
weight equation
weight (N) + mass (kg) x gravitational field strength
weight equation triangle
. weight
mass gravitational field strength (N/KG)
centre of mass
In physics, the center of mass of a distribution of mass in space is the unique point at any given time
resultant force
the sum of all the forces acting upon an object
elasticity equation
force(n) = spring constant (N/m) x extension (m)
elasticity equation
. force
spring constant extension (m)
