# IGCSE Physics 22/42Watch

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2 years ago
#21
(Original post by lixiaolu)
Yeah you are right
are you sure its right?
0
2 years ago
#22
(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
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2 years ago
#23
(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
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#24
(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
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2 years ago
#25
yea it was 27000 and 0.5 for the last i got these answers
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2 years ago
#26
(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
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2 years ago
#27
(Original post by anushgaur)
are you sure its right?
Sry, I checked its 270000
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2 years ago
#28
(Original post by lixiaolu)
Sry, I checked its 270000
howd you checked do you have a marrk scheme if yes plz send link
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2 years ago
#29
(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.
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2 years ago
#30
(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
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2 years ago
#31
(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!
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2 years ago
#32
Plz can anyone rememeber paper 2 mcqs were they easy cuz i gave the paper and 8 cannot remeber them some of them or their ideas.
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2 years ago
#33
How will be the grade thresholds i am very very very very nervous and tensed about physics
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2 years ago
#34
I'm tensed about all of them. The grade threshold will probably be 160 for Physics.
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