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loco85

The displacement (in meters) of a particle moving in a straight line is given by the equation of motion below, where t is measured in seconds. http://www.webassign.net/cgi-bin/symimage.cgi?expr=s%20%3D%207%2Ft%5E2 (a) Find the velocity of the particle at time t = a. m/s (b) Find the velocity of the particle at time t = 1. m/s (c) Find the velocity of the particle at time t = 2. m/s (d) Find the velocity of the particle at time t = 3. m/s

  • 2 years ago
  • 2 years ago

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  1. bendt
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    Differentiate and put your values of t in.

    • 2 years ago
  2. dhatraditya
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    velocity is ds/dt so differentiate your equation, then plug in values for t

    • 2 years ago
  3. alice_smith
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    the answer is d

    • 2 years ago
  4. loco85
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    It's not multiple choice.

    • 2 years ago
  5. dhatraditya
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    huh? this is not a multiple choice question

    • 2 years ago
  6. alice_smith
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    oh

    • 2 years ago
  7. bendt
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    Have you got it loco?

    • 2 years ago
  8. loco85
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    I'm having trouble figuring out how to do it.

    • 2 years ago
  9. alice_smith
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    u get better i tryed

    • 2 years ago
  10. bendt
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    \[v=\frac{ds}{dt}=\frac{d(7t^{-2})}{dt}=-14t^{-3}\]That's your function for velocity, now just plug in the values of t.

    • 2 years ago
  11. loco85
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    What would the value for a be then?

    • 2 years ago
  12. bendt
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    -14/a^3

    • 2 years ago
  13. loco85
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    The way you showed is really helpful.

    • 2 years ago
  14. bendt
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    Good, glad I helped.

    • 2 years ago
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