IGCSE Physics 22/42
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Original post by lixiaolu
Yeah you are right
are you sure its right?
Original post by anushgaur
what was your answer for the final velocity in the momentum question. 2.72 m/s or 0.5 m/s?
i got 0.5m/s
Original post by sheshenk
what was the impulse? 3000Ns for me
my teacher did not even teach me that, there was none in the book...I screw up that 4 questions
Original post by anushgaur
yes i wrote 3000 Ns as well. the sad part is that this question's answer changes the answer for the next question as well. Lots of people say its 27000 Ns
Pretty sure its 27000. As for the final one I got 0.5
yea it was 27000 and 0.5 for the last i got these answers
Original post by Crossover
I wrote 3000Ns but many ppl wrote 27000 as impulse
They give e.c.f. so don't worry, you are probably loosing 1 mark only
Original post by anushgaur
are you sure its right?
Sry, I checked its 270000
Original post by lixiaolu
Sry, I checked its 270000
howd you checked do you have a marrk scheme if yes plz send link
Original post by laveeza
howd you checked do you have a marrk scheme if yes plz send link
There's is no mark scheme, but if you wrote the equation ft=change in mv then at least you should be given 1 mark out of the two even if you get the final answer wrong. the next answer is follow through they will give e.c.f.
Original post by lixiaolu
There's is no mark scheme, but if you wrote the equation ft=change in mv then at least you should be given 1 mark out of the two even if you get the final answer wrong. the next answer is follow through they will give e.c.f.
btw i wrote 27000 not 270000 so please rectify it
Original post by laveeza
btw i wrote 27000 not 270000 so please rectify it
Yeah sure. I ams sorry I mistyped it up there. No worries!
I'm tensed about all of them. The grade threshold will probably be 160 for Physics.
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