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# phiysics course work watch

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1. 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?
2. Explain further ... more details
3. 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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Updated: April 26, 2004
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