ALL PHYSICS DOUBTS - POST HERE !!

[Vin]

Hey VIN. I asked u a question b4 and u said for accelerating objects u do this formula: 0.5ta (timeXacceleration) K but why the 0.5???

whoa wen did i say tht ??

[Baladya]

1/2 at^2
The 1/2 is cos accelerations is from rest
on a velocity time graph the distance is area under curve - a triangle so area =1/2base*height hence the 1/2

No i want speed not distance. Cuz there was a question (cant remember what paper) and it said what is the speed. So i did: DISTANCE/TIME. However the answer was diff. and Vin told me to do 0.5at to find the SPEED.

[Baladya]

whoa wen did i say tht ??

maybe u said o.5at^2... i dont remember what exactly but u said it here

[dodi23]

baladya>>i love ur signiture

[Vin]

Thanks A@di and sir ..

v = u + at

s= 1/2 (v+u) * t

s = ut + 1/2 at²

v² = u² + 2as

..
  
  

[Vin]

maybe u said o.5at^2... i dont remember what exactly but u said it here

lol i may make mistakes while solving a sum but i always remember the formula .. !! =)

[Ghost Of Highbury]

Velocity and time and acceleration are involved in v=u+at only

Remember the formula dont get confused

v=u+at

v^2 = u^2 + 2as

S=(u+v)/2 *t

S = ut + 0.5at^2

[Baladya]

baladya>>i love ur signiture

HAHAHA Do u know how many people told me that xD

Thanks VIN, Aodi, and Sir

[PeaceMaker]

Paper 6 was easy but confusing at some parts. But i think i messed up *sighs* i wrote some answers by pencil and forgot to write them with pen because i didn't have enough time. Will they put marks on it or not? if not then i think i'll be getting D or E in paper 6.

[Shazizzzle]

AWESOME PAPER!

[33oomar]

it was  easy but question 4 was tough

[holtadit]

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[Fastal]

i have a major question

in physics, do we give answers to 2dp or 3sf,
my friends were saying 2 dp is preferred as it is written in the syllabus, but i cant find it anywhere

[Baladya]

i have a major question

in physics, do we give answers to 2dp or 3sf,
my friends were saying 2 dp is preferred as it is written in the syllabus, but i cant find it anywhere

m too not sure of that, but i think u can give it to any of them... Also depends on the question, if it needs decimals then dont round to the nearest whole digit . Not sure tho

[holtadit]

i have a major question

in physics, do we give answers to 2dp or 3sf,
my friends were saying 2 dp is preferred as it is written in the syllabus, but i cant find it anywhere

You MUST choose either 2 SF or 3 SF