16 lines
656 B
Markdown
16 lines
656 B
Markdown
[[Linear Momentum]]
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# Summary
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* Elastic collision: total kinetic energy stays the same
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* Inelastic collision: energy is lost to things like heat and sound
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* Perfectly inelastic collision: objects stick together and share one velocity
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* Momentum is conserved in every collision where net external force is zero
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* "Lost" kinetic energy just transforms into different forms, so total energy is preserved.
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Perfectly inelastic collisions:
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$$v_f=\frac{m_1v_1+m_2v_2}{m_1+m_2}$$
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![[Pasted image 20260819112153.png]]
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# Elastic Collision Energy Conservation Formula
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$$\frac{1}{2}m_1v^2_{1i}+\frac{1}{2}m_2v^2_{2i}=\frac{1}{2}m_1v^2_{1f}+\frac{1}{2}m_2v^2_{2f}$$
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