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Chapter 8 : Linear Momentum, Problem-solving of Collisions in 2 / 3D, TAN…
Chapter 8 : Linear Momentum
Conservation of Momentum
Total momentum does not change
m1u1+m2u2=m1v1+m2v2
Momentum & Its Relation to Force
Center of Mass & Translational Motion
System of Variable Mass ; Rocket Propulsion
Center of Mass
Collision in 2/3D
Inelastic Collisions
m1u1+m2u2=(m1+m2)v
KE is lost > thermal / PE
objects stick together afterward = completely inelastic collision
Collisions & Impulse
Impulse = Change in momentum
Conservation of Energy & Momentum in Collisions
Momentum can be conserved in all collisions
Elastic Collision in 1D
Both momentum & KE are conserved
m1u1+m2u2=m1v1+m2v2 ;
u1=v2-v1
Problem-solving of Collisions in 2 / 3D
Choose system.
External force?
Draw diagram (initial and final).
Choose coordinate system.
Apply momentum conservation.
Elastic > KE is conserved.
Solve.
TAN LIAN YIN ( A20SC0397 )
Before
After
