anonymous
  • anonymous
A rowboat passenger uses an oar to push the boat off the dock by exerting a force of 30.0 N for 4.0 s. What impulse acts on the boat? A. 7.5 kg * m/s B. 480 kg * m/s C. 0.13 g kg * m/s D. 120 kg * m/s ** :/
Mathematics
jamiebookeater
  • jamiebookeater
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Michele_Laino
  • Michele_Laino
it is simple, we have to apply this formula: \[\Large I = F\Delta t\]
Michele_Laino
  • Michele_Laino
so we can write: \[\Large I = F\Delta t = 30 \times 4 = ...\]
anonymous
  • anonymous
120? so choice D is our solution?

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Michele_Laino
  • Michele_Laino
yes! That's right!
anonymous
  • anonymous
yay!! thank you!

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