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    What did people get for the gravitational potential energy and kinetic energy for the rocket in P2?

    And the question beneath that about how far the distance/height rocket travelled?


    Posted from TSR Mobile
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    Can I just say - I only discovered this site today and it has been so helpful Above all though - after the Physics exams I felt so sick and felt as though all had gone wrong... I found out I had failed about 5 1-mark questions which I could have easily got :/ But I just want to thank everyone on this because you have been so kind to me and made me feel better even though I lost a few marks... Thanks you so much for giving everyone the support I didn't expect to see here ( this is so cringey but yeah...) Keep helping everyone and I wish you all the best for your future exams Thanks, S21.99
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    I said 3.6J (I think) for the first two as there was no working space for the gravitational energy and so I thought it must be conserved. I said 7.2 for the height (double whatever I put first...)
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    (Original post by ScreamingWhisper)
    What did people get for the gravitational potential energy and kinetic energy for the rocket in P2?

    And the question beneath that about how far the distance/height rocket travelled?

    Posted from TSR Mobile
    Kinetic energy

    E = m * v^2 * 0.5
    E = 50 * 12^2 * 0.5
    E = 3600J

    KE equal to maximum gpe = 3600J

    Height = 7200m
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    (Original post by MrTechGamer)
    What did everyone one put for the resistance question in p2 ? like the ones with the thickness of the wire.
    Wire C because the line was the shallowest so highest resistance.
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    Omg. I think I missed a page out. I don't remember drawing a ray diagram. Can anyone remember the questions on that page?
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    http://www.thestudentroom.co.uk/show...493&highlight= - Physics 2 unofficial markscheme
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    For conservation of momentum can you say all the momentum in the first object is transferred to the second object?
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    (Original post by Bubblebex1)
    Charge is measured in coulombs
    Resistance is measured in ohms


    Posted from TSR Mobile
    yes correct
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    (Original post by S21.99)
    I said 3.6J (I think) for the first two as there was no working space for the gravitational energy and so I thought it must be conserved. I said 7.2 for the height (double whatever I put first...)
    Yep i think that was right. And 3.6j for both kinetic and gpe
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    (Original post by Momo88)
    Omg. I think I missed a page out. I don't remember drawing a ray diagram. Can anyone remember the questions on that page?
    That was for P3 dont worry!!
    What did you get for the momentum question??
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    I found the P2 exam the hardest one out of all the additional ones...I really struggled. I guess it was because I wasn't as prepared as I should have been like the Biology and Chemistry...I think the P2 has pulled my overall grade down really low now...

    I didn't answer any of the plum pudding ones...:O - I ran outta time which sucked..

    All the maths ones I got completely wrong because I had no idea which one to use and completely failed....all the answers on here are making me think ive done everything wrong.

    I revised half life and then went blank in the exam...
    The momentum questions threw me off, and even the stuff about the parachutist with all the graphs at the end..I JUST DONT EVEN KNOW.

    The only question I am confident about is the 6 marker..i think I haven't even passed
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    Is there an unofficial markscheme?
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    (Original post by fabsafxo)
    Is there an unofficial markscheme?
    http://www.thestudentroom.co.uk/show...493&highlight=
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    Thankyou!<3
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    (Original post by Decklan)
    Kinetic energy

    E = m * v^2 * 0.5
    E = 50 * 12^2 * 0.5
    E = 3600J

    KE equal to maximum gpe = 3600J

    Height = 7200m
    I may be wrong but I think the answer was 3.6J

    Could it be that you used grams instead of kg for the mass? I don't think the mass was 50kg as it was only a small toy rocket!!

    7200m seems a bit high for an air powered rocket as well
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    do you guys think the grade boundaries will be high this year?
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    (Original post by iKali)
    do you guys think the grade boundaries will be high this year?
    yeah. maybe 49 / 48 or even 50
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    Judging by unofficial mark schemes, A* in P3 and A/A* in P2.
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    (Original post by RotomGuy)
    Judging by unofficial mark schemes, A* in P3 and A/A* in P2.
    is there a link for the p3 unofficial mark scheme?
 
 
 

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