Qualification > Sciences
CIE physics paper 2
falafail:
--- Quote from: Tyserius on November 16, 2009, 11:54:12 am ---The velocity question was actually to just use your ruler to draw the lines D: And you can actually double check by using the following formula :
Let vR be the resultant velocity, vx be the horizontal velocity and vy be the vertical velocity.
vR = Square root of (vx2 + vy2)
Then the horizontal angle can be found by tan = vy/vx
The vertical angle then can be obtained by 90 -
--- End quote ---
nono, not the vector diagram thing. the one before, the second part. i tried using the v2 = u2 blahblahblah formula but i didn't get it right :(
oh well.
Tyserius:
It's because the vertical component begins with 0. So v =
falafail:
--- Quote from: Tyserius on November 16, 2009, 02:27:57 pm ---It's because the vertical component begins with 0. So v =
--- End quote ---
yessss i knowwwww i'm saying i couldn't get the answer right (6.22 or whatever it was)
i left that though so i'll prolly get marks for it.
MaNi_DaDuDe:
the paper had finished in every country before discussion started. :)
I made sure.
vince_24:
The phase difference I got was 270 degrees. Also, What did you guys get for the amplitude? There is a lot of mixed answers going around at our school. Only 1 mark though :D I wrote 3/4 A
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