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- When momentum is conserved, the momentum of a system before a collision must equal the momentum of a system after the collision. In other words,
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- If the collision occurs in more than one
- dimension, momentum is conserved in each
- dimension.
- In a completely elastic collision, kinetic
- energy is conserved. Together with the
- conservation of momentum, these equations
- are sufficient to solve problems.
- In a completely inelastic collision, the
- two objects remain stuck together after the
- collision. The different parameters for the
- problem therefore include initial velocity of
- the first object, initial velocity of the second object,
- final velocity of the combined objects, and the masses
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