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re: HSC Physics Marathon Archive Was that exactly what the question was looking for?

Re: HSC 2015 4U Marathon Better just to use a geometrical representation (so much easier and is probably the preferred method anyways)

re: HSC Physics Marathon Archive Actually, I'll give it a go (considering this is under exam conditions, can't ask anything) :V So Newton is known for his laws of gravity (in this scenario anyway), which describes the gravitational attraction between bodies (esp larger bodies e.g. planets)...

re: HSC Physics Marathon Archive No clue what the question is asking. And how does the spacecraft survive after getting hit? 'We just put Isaac Newton in the driver’s seat’ - is this a metaphor for something?

re: HSC Physics Marathon Archive a)29.8m b)No. t=4.76, Range only reaches ~137.8m

re: HSC Physics Marathon Archive Hit what part of the wall? (Quite a vague question I reckon)

Re: HSC 2015 4U Marathon Rofl

re: HSC Physics Marathon Archive Ohh, I thought we answered questions to help others structure their own responses. (I edited my response above)

re: HSC Physics Marathon Archive The forces on a spacecraft in stable orbit? (I Thought spacecraft travel to end of the universe, rofl) If so, then the forces are the centripetal force (due to angular constant velocity and gravitational attraction). In a geostationary orbit, the angular...

re: HSC Physics Marathon Archive Next question plz :ninja:

(Integrand has wayyyyyyyyyyyyyyyyyyyyy to much time on his hands + he's a freak) Yeah, I guess I'll go rote the rules + past papers to familiarise. Cheers guys

Re: HSC 2015 4U Marathon Interesting solve by Frank, esp the first part. And looking at the amount of latex Integrand used, you can tell this guy's a beast ;)

Never heard of Creelman b4, is it worth the purchase? (Pretty sure not in my library)

re: HSC Physics Marathon Archive Not sure if the syllabus directly addresses the dangers of being in space (e.g. possibility of mass decrease due to osteopenia which is from weightlessness) As for forces during re-entry: -> gravitational acceleration in combination with spacecraft acceleration...

Sometimes, I forget which states to use. Apparently (from a lecturer at UNSW) if I mess up just a single state, my entire equation becomes invalid and thus losing all the marks allocated to a correct equation So, should I just leave the states out if i'm unsure or should i go back and rote the...

If it's calculation problems, I can help out :)

Yup, went through most people's sigs And Thanks, I'll try to ask my teacher (who actually asks me to give her past papers - yeah right) Guess the BoS crew is my only hope xD

re: HSC Physics Marathon Archive Haha, thanks for clearing that up :) (I thought 'normal' as in 'typical') Right, so from my prelim knowledge: F(perp)=5x9.8xcos30 (But that doesnt explain where the 2m/s fits into the picture, because that's a parallel force)

re: HSC Physics Marathon Archive Logically makes no sense. You can't have a frictionless plane and expect to achieve constant velocity. Oh and what is the 'normal force'? (Hella bad at english as u can tell)

Somewhat, I'd prefer Physics doe. (esp the Quanta to Quarks module)