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Unformatted text preview: , âˆ« F net dt = âˆ† p , where the impulse of a force is defined, I â‰¡ âˆ« F dt. this is the area under F vs t graph For example, F net âˆ† t = F net âˆ† t = âˆ† p where the average force is used. A consequence of the impulsemomentum theorem is the law of conservation of momentum : If the net external force acting on a system is zero, then the momentum of the system is constant. An important application is to collisions. In the simplest case we consider the collision of two particles in onedimension, of which there are two extreme regimes. â€¢ completely inelastic Only momentum of the twobody system is conserved. â€¢ Elastic Both momentum and kinetic energy of the twobody system is conserved. EXAMPLES [in class]...
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 Spring '08
 Chen
 Physics, Force, Mass, Momentum, Fnet

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