energy Flashcards
what are forces measured in
newtons
what is the weight of an object
the force caused by gravity pulling it down
what is the mass of an object
the mass of an object is how much after it contains
energy
energy is transferred when a force moves an object
energy transferred
energy transfers =force (in Newtons N) x distance (in metres)
distance
D=m/f
force
f=m/d
moment
M=fxd
What is mass
Mass is a measure of how much matter is in an object
What is friction
Fiction is things rubbing against each other
What is the density
Density is the degree of Compactness of a subject
What is air resistance
A resistance is the frictional force exerts against a moving object
Why do some materials cause more friction than others
Some materials cause more friction than others because they have rough or bumpy surfaces
Name to lubricants and what they do
Vasoline and toilet are both lubricants because they make things slippery and reduce friction
What is friction
Section is a force between two surfaces that are sliding or trying to slide across each other
