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anonymous

  • 5 years ago

i need help with this problem The acceleration function and the initial velocity for a particle moving along a line are: a(t)= 2t + 3, v(0)= -4, 0<t<3 Find the distance traveled during the time interval. Round your answers to tenths.

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  1. anonymous
    • 5 years ago
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    do you know the formula for displacement in terms of initial velocity and acceleration?

  2. anonymous
    • 5 years ago
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    i do not

  3. anonymous
    • 5 years ago
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    okay, well it is: s(t) = u*t+1/2*a*t^2

  4. anonymous
    • 5 years ago
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    where u is the initial velocity, a is acceleration, and s is the displacement.

  5. anonymous
    • 5 years ago
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    ok

  6. anonymous
    • 5 years ago
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    substitute your values in that equation to get displacement

  7. anonymous
    • 5 years ago
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    well i get 34.5 but the answer is still wrong

  8. anonymous
    • 5 years ago
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    i dont know what i did wrong

  9. anonymous
    • 5 years ago
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    you should get 28.5. Is that right?

  10. anonymous
    • 5 years ago
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    how did u get that answer

  11. anonymous
    • 5 years ago
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    i just substituted t = 3 and u = v(0) = -4

  12. anonymous
    • 5 years ago
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    wow thank you

  13. anonymous
    • 5 years ago
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    you are welcome.

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spraguer (Moderator)
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