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i hate this... dun get it... its under vertical motion under gravity A stone is let fall from a tall building and 1 second later another stone is projected vertically downwards with a velocity of 20 m/s. When wil the second stone overtake the first? help... i dun even noe where to start...

i didn't do anything in 3 unit preliminary (I'm in year 12 at the moment), so let's just say I just done the 2 unit course for year 11 :P I was getting about 50-60% in 2 unit for year 11, that's what i got for minimal effort. I got <30% for year 12 extension maths. When year 12 started, I...

3x = 180+90 or 360-90. (all stations to center, pick the negative quadrants, make sure that when u put it in the calculator u put it as positive, the negative will come into play when u determine which quadrants to use, in this case it is T and C, the two quandrants where the sin ratio will have...

EDIT: due to my shithouse maths skills, here is a more correct version :P See attachment

I was looking ahead in the syllabus in class today.. Global business is like 3 pages long!!! I was like "oh shit, this itself is going to take 10 weeks to do..." especially with my class lol.

I have never had an all nighter to study or do assignments.. Even if I tried, my mum would be like rar rar rarr go to bed rarr rarr o_O

Hey, where are you up to? How many topics have you done? We just started our fourth topic, Marketing. I feel as though we are behind, despite the fact that we have our trials in week 5 and 6.

I had a maths 2 unit exam today which I think I totally stuffed up.. I also had a modern history exam which I also think I stuffed up in.. Friday I got an english assignment due, aswell as my IPT major work. Me lucky? nope! lol.. Well, at least it's not as bad other peoples'! :p Oh and...

my major work is due friday next week. ours is due in parts, today we handed in part 3. 4 and 5 are due next friday and thats it for the major work. we have an IPT test in week 9 or 10 on multimedia o_O

I'm with you, dude. I feel so dumb after reading through this thread lol :(

This is two unit. :p

Once you look at many questions from past papers you will notice that they rarely put in questions that take up a considerable amount of time. As you do many past papers, you will gradually be able to do the HSC questions quicker as it just becomes a procedure for you. As acmilan said, blitz it...

i finished the 2 unit course over a month ago my class is almost finished..

Hmm after seeing the titles of those topics, they sound a bit interesting to me. I would have liked to know what they are like. Too bad I done jack shit all year for year 11 lol. And I mean it too, that's the first time I've heard of those topics lol. :eek:

c) determine the max velocity of the particle. max velocity when x = 0 .'. v^2 = n^2(a^2-x^2) .'. V^2 = n^2(17) V^2 = 4(17) v = root(68) =8.2m/s i think that's right, not too sure though

b) x = acos(nt+ b) when t = 0, x = 4 .'. 4 = acos(b) (equation 1) when t = 0, v = 2 .'. 2 = -ansin(b) hmm, now im assuming n = 2 (from a)) .'. 2 = -2asin(b) .'. -1=asin(b) (equation 2) equation 2 divided by equation 1 .'. -1/4 = tan(b) b = - tan^-1(1/4) .'. x = acos(2t...

We have just got a 10% weighting exam next week thursday. It's pretty basic stuff, it's just applications of calculus to the physical world..

2. Jack stands at the window of a building 6.2m about ground level. He throws his keys straight out the window (horizontally) and hopes that his friend Tom, who is standing 10.4m out from the base will catch them. Ignore air resis, and use g= 10, find the velocity at which Jack needs to throw...

A horizontal drainpipe 6m above sea level empties stormwater into the sear, If the water comes out horizontally and reaches the sea 2m out from the pipe, find the initial velocity of th water, correct to 1.d.p. Let g = 10ms-² and neglect air resis. answer is: 1.8m/s cartesian eqn: y =...

Hey I'm wondering if anyone could help me out with this question: What would be the dataflow diagram for this hair salon business. The business: -Recieves orders/requests/information/suggestions etc through website's email. -Provides advertising through the website. -Provides customer...