momentum Flashcards
Springy collision
head on collision and both reactants move off in different
Sticky collision
both components move off together
momentum
mass x velocity
conservation of momentum
total/ sum of momentume from 2 bodies in a closed system provides no res force
when working out, choose a
positive y-direction and/ or x-direction
perfectly elastic collision
total kinetic energy of the bodies remains constant
inelastic collision
kinetic energy is not conserved. Lost as heator other
momentum before and after are equal if
momentum is conserved
momentum is a vector quantity therefore
split to solve
resultant force
change in momentum / change in time
describe momentum
how hard something is to stop
Measure of objects motion
force =
change in momentum /
change in time
If an object’s momentum changes quickly
the force is large.
If an object’s momentum changes slowly
the force is small.
Principle of Conservation of Momentum
m1 x u1 + m2 x u2 = m1 x v 1 + m2 x v 2
inelastic collisions
Kinetic energy before > kinetic energy after
elastic collision
Kinetic energy before = Kinetic energy after
Impulse =
force x change in time
