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CHAPTER 8 : LINEAR MOMENTUM - Coggle Diagram
CHAPTER 8 : LINEAR MOMENTUM
8-2 : Conservation of Momentum
Total momentum does not change :
mAvA + mBvB = mA'vA' + mB'vB'
8-3 : Collision & Impuls
Elastic collision :
Σpbefore = Σ pafter
Total kinetic energy is not conserved,
Inelastic collision :
Σpbefore = Σ pafter
Total kinenatic energy is not conserved
Impulse :
J = Ft
Unit : N s (kg ms^-1)
J =pf - pi
J = mv-mu
8-4 : Conservation of Energy & Momentum in Collisions
Momentum
is
conserved
in
all collisions
Collisions in which
kinetic energy
is
conserved
is called
elastic collisions.
And those in which
kinetic energy
is
not conserved
are called
inelastic
.
8-6 : Inelastic Collision
A
completely inelastic
collision is one in which the objects
stick together
afterward, so there is only one final velocity.
8-5 : Elastic Collisions in 1D
8-7 : Collision in 2D @ 3D
8-10 : System of Variable Mass: Rocket Propulsion
dP / dt = ΣFext
ΣFext = M (dv/dt)) - (u-v)(dM / dt)
M(dv/dt) = ΣFext + vrel(dM / dt)
8-8 : Center of Mass (CM)
xcm = (mAxA + mBxB) / (mA + mB)
8-1 : Momentum & its Relation to Force
Momentum,
p = mv
Rate change of momentum = net force
Fnet= Δp / Δt
8-9 : Center of Mass & Translational Motion
Macm = ΣFext
