30280080
Descrição
FlashCards por Adriana Vincelli-Joma, atualizado more than 1 year ago
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Criado por Adriana Vincelli-Joma
aproximadamente 3 anos atrás
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| Questão | Responda |
| linear momentum | -product of system's mess multiplied by its velocity -p = mv |
| Newton's Second Law and Momentum | F_net = Δp/Δt |
| impulse | change in momentum equals average net external force multiplied by time force acts |
| impulse formula | Δp = F_net x Δt |
| isolated system | -one for which net external force is 0 (F_net = 0) -conservation of momentum applies only when net external force is 0 |
| conservation of momentum principle | -p_tot = constant -valid when considering systems of particles |
| elastic collision | conserves internal kinetic energy |
| inelastic collision | one in which internal kinetic energy changes |
| conservation of momentum (1D collision) | -(m_1)(v_1) + (m_2)(v_2) = (m_1)(v_1') + (m_2)(v_2') -1/2(m_1)(v_1)^2 + 1/2(m_2)(v_2)^2 = 1/2(m_1)(v_1')^2 + 1/2(m_2)(v_2')^2 |
| conservation of momentum (2D collision) | -x-axis: *(m_1)(v_1) = (m_1)(v_1')cosθ_1 + (m_2)(v_2')cosθ_2 -y-axis: *0 = (m_1)(v_1')sinθ_1 + (m_2)(v_2')sinθ_2 |
| acceleration of rocket | a = (v_e)/m x Δm/Δt - g |
| final velocity of one-stage rocket initially at rest | v = v_e ln(m_0/m_r) |
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