anonymous
  • anonymous
In a closed system, Glider A with a mass of 0.40 kg and a speed of 2.00 m/s collides with Glider B at rest with a mass of 1.20 kg. The two interlock and move off. What speed are they moving? A. 0.50 m/s B. 1.0 m/s C. 2.0 m/s D. 4.0 m/s
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Michele_Laino
  • Michele_Laino
here we have to apply the total momentu conservation law. So we can write this: \[\Large {m_1}{v_1} + {m_2}{v_2} = \left( {{m_1} + {m_2}} \right)V\]
anonymous
  • anonymous
ok!
Michele_Laino
  • Michele_Laino
where V is the requested speed: \[\Large V = \frac{{{m_1}{v_1} + {m_2}{v_2}}}{{{m_1} + {m_2}}} = \frac{{0.4 \times 2 + 1.2 \times 0}}{{0.4 + 1.2}} = ...m/\sec \]

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Michele_Laino
  • Michele_Laino
\[\large V = \frac{{{m_1}{v_1} + {m_2}{v_2}}}{{{m_1} + {m_2}}} = \frac{{0.4 \times 2 + 1.2 \times 0}}{{0.4 + 1.2}} = ...m/\sec \]
anonymous
  • anonymous
so we get 0.5? so choice A is our solution?
Michele_Laino
  • Michele_Laino
yes! correct!
anonymous
  • anonymous
yay!! thanks!!:)
Michele_Laino
  • Michele_Laino
:)

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