Momentum General Physics. Momentum Mass in motion Symbol: p Equation: p = m  v Units: kg x m/s Vector quantity.

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Presentation transcript:

Momentum General Physics

Momentum Mass in motion Symbol: p Equation: p = m  v Units: kg x m/s Vector quantity

Momentum and Impulse Need a force over a period of time to change an object’s momentum

Impulse-Momentum Change Equation F = ma F = m  v/t Ft= m  v = p f -p i Impulse = change in momentum

Real-Life Application Following through while swinging a bat Airbags Nylon ropes in rock climbing

Conservation of Momentum In a closed system: momentum of objects before a collision = momentum after collision p Ai + p Bi = p Af + p Bf

Elastic Collision Objects do not stick to each other Kinetic energy remains the same /momentum/cthoe.cfmhttp:// /momentum/cthoe.cfm

Inelastic Collision Objects stick together Some kinetic energy is converted to thermal energy /momentum/cthoi.cfmhttp:// /momentum/cthoi.cfm