21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012
Physics exam discussion - share revision tips in preparation for GCSE, A Level and other physics exams and discuss how they went afterwards.
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012Anyone write 10000N for the one which stops the motorbike/car in 5 second?
Rearrange it? so Change/Time = Resultant force?
50000/5 = 10000N?
Imo sounds more likely than 4N to stop a car travelling at 20m/s in 5 seconds... :L but alot of people had various answers -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012I know exactly how you feel.(Original post by lucasluke)
looking at all these answers makes me feel sick lol!
i did it all wrong... hopefully the boundaries are really low -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012well... it does sound reasonable if the answer is 4N because if you imagine someone pulling the motorbike 4Kg every second, that does add up to 20 (if you do 4Kg x 5s), meaning in 5 seconds, the motorbike will stop.(Original post by jLou711)
Anyone write 10000N for the one which stops the motorbike/car in 5 second?
Rearrange it? so Change/Time = Resultant force?
50000/5 = 10000N?
Imo sounds more likely than 4N to stop a car travelling at 20m/s in 5 seconds... :L but alot of people had various answers
10000N??? Doesn't sound reasonable... -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 20124N is not 4kg(Original post by TwlilightLoz)
well... it does sound reasonable if the answer is 4N because if you imagine someone pulling the motorbike 4Kg every second, that does add up to 20 (if you do 4Kg x 5s), meaning in 5 seconds, the motorbike will stop.
10000N??? Doesn't sound reasonable...
40N is 4kg
20m/s is roughly 45mph.. -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012internal(Original post by Angelica.)
I put 1000N for the force one...
& What did people put for the total internal reflection one?
reflection
refraction
90
or do you mean the diagram? -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012don't know how to describe it...(Original post by Angelica.)
yeah, the diagram, there was a bit of confusion
I drew it as if it was being reflected. cos I had no idea what to do. -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012do you reckon the boundary for an A* will be like 35 or 36 or do you think the boundary will be lower than the recent paper where it was 27 so do you reckon it'll be like 24/25/26 for an A*?
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012i drew it inside, but my line went outside the block... I think it may remain same.. I doubt OCR will drop the boundary below 27 for an A*. Depends though on how the country performed... they look pretty bad if everyone fails
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012most people I have spoken to are like 'it was SOOO hard'. others are like 'it was okay'.(Original post by science-oliver)
do you reckon the boundary for an A* will be like 35 or 36 or do you think the boundary will be lower than the recent paper where it was 27 so do you reckon it'll be like 24/25/26 for an A*?
I think its gonna be around the 28/30 mark for an A*. no lower.
defo won't drop lower than 27. -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012The answer to the last Question was the bottom tick box.(Original post by (L)*)
What did you put for the last question? -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012I can't even remember what I ticked now.(Original post by the A* guy)
The answer to the last Question was the bottom tick box.
URGH
thankyou -
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Re: 21st Century Science GCSE Unit 2 P4P5P6 - Thursday 2nd February 2012same here(Original post by the A* guy)
What did everyone choose for the person with the incorrect statement?
I picked Darrel.
)
