Unit: Momentum I.Impulse:  F  t = I =  p II.Conservation of Momentum: if  F = 0, then  p total = 0 III.Collisions:  p total = 0 A.Elastic:  K =

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Unit: Momentum I.Impulse:  F  t = I =  p II.Conservation of Momentum: if  F = 0, then  p total = 0 III.Collisions:  p total = 0 A.Elastic:  K = 0 B.Inelastic C.Perfectly Inelastic IV.2D Collisions:  p x = 0 and  p y = 0 today

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Momentum, Energy and Collisions p 2i p 1i When is momentum conserved?

Momentum, Energy and Collisions p 2i p 1i p total = p 1i + p 2i = p 1f + p 2f When is energy conserved?