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# Edexcel Unit 1 (IAL): Physics on the Go, WPH01 (24th May 2016) Watch

1. The paper is around the corner post your doubts here
2. Could someone explain this?
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3. Bump

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4. (Original post by Saad69)
Could someone explain this?
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Due to Newton's first law, when the train decelerates,a resultant force acts on each of the passengers,but a force is exerted on passengers B and C from the chair in the opposite direction so their forces are balanced and they don't accelerate and remain in their seats, but due to inertia passenger A keeps moving in its initial motion and collides with passenger B.Hence, both passengers A and B may be injured so seat C is the safest.
5. Thanks
6. (Original post by Saad69)
Thanks
you're welcome!
7. How to calculate part ii?

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8. (Original post by Saad69)
How to calculate part ii?

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Make the graph an approximate triangle and work out its area, which I think will be the elastic potential energy
9. (Original post by daniellon)
Make the graph an approximate triangle and work out its area, which I think will be the elastic potential energy
Could you try solving for me?
10. Dear friends;
i am a new member of TSR and i really need help. I could not use the raw to ums converter from edexcel website and i want to request for something. Can you plz help me somehow by telling me the minimum raw marks required to get full ums marks in 2016jan physics unit 1 edexcel paper. plz help me i really need to know. the only subject that is frightening me is this unit 1 and i am really scared... so plz my dear friend plz help me. thanks
11. (Original post by AbhishekLad)
Dear friends;
i am a new member of TSR and i really need help. I could not use the raw to ums converter from edexcel website and i want to request for something. Can you plz help me somehow by telling me the minimum raw marks required to get full ums marks in 2016jan physics unit 1 edexcel paper. plz help me i really need to know. the only subject that is frightening me is this unit 1 and i am really scared... so plz my dear friend plz help me. thanks
will this help?
https://qualifications.pearson.com/c...Boundaries.pdf
12. unit 3 forum was way more active
13. (Original post by djmans)
unit 3 forum was way more active
true...
14. I think ppl stopped caring

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15. Need help in this question can anyone tell me what to write the ans thanx

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16. (Original post by Komol)
Need help in this question can anyone tell me what to write the ans thanxPosted from TSR Mobile
As the balloon rises the density of the air decreases (becomes thinner). The upthrust on the balloon is proprional to density, hence upthrust will reduce. The volume of the displaced air increases as the balloon expands. This increases the upthrust on the balloon. However the decrease in density has more of an effect than the increase in volume, hence the upthrust reduces.
17. (Original post by Lewi348)
As the balloon rises the density of the air decreases (becomes thinner). The upthrust on the balloon is proprional to density, hence upthrust will reduce. The volume of the displaced air increases as the balloon expands. This increases the upthrust on the balloon. However the decrease in density has more of an effect than the increase in volume, hence the upthrust reduces.
Thanx

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18. Do the IAL papers use the same specification as the normal papers?

(I am retaking so doing old spec)
19. Exams tomorrow, I'm really nervous

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20. Same good luck

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