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Momentum and Collisions

Momentum and Collisions. Momentum mass x velocity p=mv Units: kgm/s Momentum is a vector- Direction matters! Be careful when entering the velocity! Impulse- the change in momentum caused by a net force acting on the system. J=F D t = m D v D v= v-v 0. Collisions.

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Momentum and Collisions

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  1. Momentum and Collisions Momentum mass x velocity p=mv Units: kgm/s Momentum is a vector- Direction matters! Be careful when entering the velocity! Impulse- the change in momentum caused by a net force acting on the system. J=FDt = mDv Dv= v-v0

  2. Collisions • Two major types, Elastic, Inelastic Momentum is conserved in collisions. Momentum Before=Momentum After • Elastic Collision Objects bounce off of each other No lasting deformity No heat generated Kinetic Energy is also conserved

  3. Inelastic Collisions Lasting deformity occurs Objects either stick together at the beginning and separate, or stick together at the end. Kinetic Energy is not conserved, since there is energy lost to heat.

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