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Linear Momentum and Collisions المحاضرة العاشرة

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Linear Momentum and Collisions Chapter 9

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Linear Momentum and Its Conservation

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Definition of linear momentum of a particle The linear momentum of a particle or an object that can be modeled as a particle of mass m moving with a velocity v is defined to be the product of the mass and velocity:

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Definition of linear momentum of a particle

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linear momentum of a particle

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7.3 The Scalar Product of Two Vectors Using the definition of momentum

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Impulse and Momentum

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The impulse of the force F acting on a particle equals the change in the momentum of the particle. Impulse and Momentum

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problem1

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Example 9.4 How Good Are the Bumpers?

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Collisions in One Dimension elastic collision between two objects is one in which the total kinetic energy (as well as total momentum) of the system is the same before and after the collision.

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An inelastic collision is one in which the total kinetic energy of the system is not the same before and after the collision (even though the momentum of the system is conserved). momentum of the system is conserved in all collisions, but kinetic energy of the system is conserved only in elastic collisions. Collisions in One Dimension

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Inelastic Collisions

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Elastic Collisions

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Example 9.8 A Two-Body Collision with a Spring

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Problem7

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Problem15

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