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phiysics course work watch

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    hiya im doin a piece of course work, tryin to find the acceleration due to gravity, it involves blowing an object through a tube, and im not sure how to interperate it, can any one help me?
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    Explain further ... more details
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    Erm,

    Well

    If your object starts at rest. e.g. 0ms^-1

    Then,

    after 1 second it will have gained a speed of 9.81ms^-1. And therefore travelled 9.81m. After 2s the distance will be 9.81 + (2 x 9.81) = Ans

    you need to use equations like:

    v = u + at
    v^2 = u^2 + 2as
    s = ut + 1/2at^2
    s = (v + u) / t

    where:
    v=final speed(ms^-1)
    u=intial speed(ms^-1)
    a= acc due to gravity (9.81ms^-1)
    s=distance(metres)
    t=time (seconds)

    As long as you know some of these values you can re-arrange the formula's to get the other ones.
    Hope that helps a bit.
 
 
 

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