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anonymous

  • one year ago

The position of a car, in metres, at time t, in seconds, is modelled by s(t)=3t^2+10t. Find its velocity at t=10.

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  1. Nnesha
    • one year ago
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    replace t by 10 2)solve

  2. CoconutJJ
    • one year ago
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    I think it's instantaneous velocity, d/dt(3t^2+10t)

  3. Nnesha
    • one year ago
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    mhmhm then ignore that ;3

  4. CoconutJJ
    • one year ago
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    dy/dt = 6t+10

  5. anonymous
    • one year ago
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    Would I just have to replace t by 10? using this equation?

  6. CoconutJJ
    • one year ago
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    What are you trying to find, Instantaneous Velocity or Average Velocity?

  7. anonymous
    • one year ago
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    The question only says to find the velocity at t=10.

  8. CoconutJJ
    • one year ago
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    What grade are you in?

  9. anonymous
    • one year ago
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    12

  10. CoconutJJ
    • one year ago
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    Most likely your finding Inst Velocity.. do you know what is a derivative ?

  11. anonymous
    • one year ago
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    Would it be 2(3t) + 10t?

  12. CoconutJJ
    • one year ago
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    Yes.. but drop the t from the 10... -> 2(3t)+10

  13. anonymous
    • one year ago
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    Then I just plug in 10 for t?

  14. CoconutJJ
    • one year ago
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    yes...

  15. anonymous
    • one year ago
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    Thank you!

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