Force

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Explain why energy is not conserved and varies in some collisions.

•Draw "before-and-after" pictures of collisions.

•Construct momentum vector representations of "before-and-after" collisions.

•Apply the law of conservation of momentum to solve collision problems.

•Explain why energy is not conserved and varies in some collisions.

•Determine the change in mechanical energy in collisions of varying elasticity.

•Define elasticity.

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