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How to arrive at answer for integration question

  1. Dec 18, 2011 #1
    Firstly, I am sorry if this is the wrong section (I really didn't know what each section meant, but I posted here since I am beginner)

    1. The problem statement, all variables and given/known data

    A stone is thrown up into the air at 20m/s is accelerated constantly downwards by gravity at about 10m/s2

    Find the anti derivative of the acceleration

    Note: I am not solving for C

    2. Relevant equations
    3. The attempt at a solution

    The antiderivative of 20m/s is 10m/s2
    and the antiderivate of -10m/s is -5m/s2

    Neither of those match up to the answer, so I'm not sure how to arrive at the answer.

    The answer in the book is v= -10t + c

    Thankyou
     
    Last edited: Dec 18, 2011
  2. jcsd
  3. Dec 18, 2011 #2
    If you have [itex] a = 10[/itex] then you need to find [itex]\int 10\ dt [/itex]. There's no need to include units in your integral.
     
  4. Dec 18, 2011 #3
    Ah, thank you very much. Can finally get on with work! =)
     
  5. Dec 18, 2011 #4

    SammyS

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    That should be [itex] a = -10[/itex]. Of course, the units are m/s2 .
     
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