Projectile Motion (1 Viewer)

[zenger69]

We're currently doing projectile motion, and our teacher is only teaching us the three formula

V=u+at

V^2=u^2+2as

S=ut+1/2at^2

And then the questions are done the same way as in physics projectile motion.

Does anyone know if we would be disadvantaged when doing the HSC, like is there any questions where all three of those formulas would not work?

Also would we be penalised becuase we did it the physics way.

 

[jm1234567890]

We're currently doing projectile motion, and our teacher is only teaching us the three formula

V=u+at

V^2=u^2+2as

S=ut+1/2at^2

And then the questions are done the same way as in physics projectile motion.

Does anyone know if we would be disadvantaged when doing the HSC, like is there any questions where all three of those formulas would not work?

Also would we be penalised becuase we did it the physics way.

yes, if you don't derrive things you might have trouble doing some ext1 questions. Escpecially if they are Q7.

That said. If they need you to derrive it, they will lead you through with several small questions.

 

[FinalFantasy]

u can't use those physics formulas in maths, cuz those formulas are ONLY for acceleration-constant.
and even if the q. is acceleration constant, u would get marked down unless the question itself asks u to derive and use it

 

[zenger69]

ok i'll tell my teacher that.......

thanks guys

 

[haboozin]

just to be safe, know that u basicly cant quote (almost) any formula's..
In the hsc with those formula's which you can quote they usually have them already on the question, so you dont need to worry.

Main formula's to learn is angle between 2 lines and quadratic equation..

Apart from that... some series ones and other scattered crap.