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snaef999

A particle starts at the origin and initial verlocity is i - j + 3k. Its acceleration is a(t) = 6t i + 12t^2 j + 6t k. Find its position function. I need help confirming my answer. Is the correct way to do this to integrate a(t) to get velocity and then integrate velocity to get position?

  • one year ago
  • one year ago

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  1. eseidl
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    yeah. You are also given it's initial velocity

    • one year ago
  2. snaef999
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    When finding velocity I need to use the initial velocity as the C right?

    • one year ago
  3. eseidl
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    Yes, the constant of integration after the first integration is your initial velocity

    • one year ago
  4. snaef999
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    My final answer is (t^3 + t)i + (t^4 -t)j + (2/3 t^3 + 3t)k + c (c = 0 because we started at the origin)

    • one year ago
  5. eseidl
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    hang on...i'll check and see what I get

    • one year ago
  6. eseidl
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    I get s(t)=(t^3+t)i+(t^4-t)j+(t^3-3t)k

    • one year ago
  7. snaef999
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    Ah. I see what I did wrong. Thank you for your help! I looked at the wrong numbers for k when I was dong position integral. It works for me now.

    • one year ago
  8. eseidl
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    cool, no prob

    • one year ago
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