# Shared Flashcard Set

## Details

Mo
Momentum
7
Physics
11/06/2008

Term
 Momentum (p)rate of change of momentum (Δp/Δt)
Definition
 p = mv Δp/Δt = F
Term
 Conservation of Momentum (2)[image] [image][image]
Definition
 m1v1 + m2v2 = m1v'1 + m2v'2If an external force is acting on the object(s) such as gravity, conservation of momentum is lost
Term
 Impulse (2)
Definition
 =Δp = FΔtthe longer the impact time of an impulse, the smaller the force can be for the same momentum change, and hence the smaller the deformation of the object on which the force acts
Term
 Elastic Collision
Definition
 KE is conserved
Term
 Inelastic Collision (3)
Definition
 Objects stick -> one vf  (completely inelastic) some KE is lost to thermal or PE, or gained from chemical/nuclear energy in explosions
Term
 Translational motion
Definition
 knuckleball, pencil dive
Term
 Center of Mass
Definition
 The motion of the center of mass of an exploding rocket (and all it's pieces) will follow it's original parabolic path, both before and after explosion.
Supporting users have an ad free experience!