Q&A - PSLE Science

[r2010]

Hi


Can I know the difficulty level of prelim papers by Jeremy

I guess
1. Nanyang
2. Rosyth
3. Henry park
4. Red swastika

[cestmoi]

htn:

Newkiasu2011:

Does anyone have answers to booklet A for nan hua science prelims 2011? Pls help, if you do. TIA

Newkiasu2011

just saw your post, nan hua science prelims 2011 answers for
Section A.

1. 2
2. 4
3. 4
4. 3
5. 4
6. 3
7. 2
8. 1
9. 4
10. 1
11. 1
12. 2
13. 3
14. 1
15. 4
16. 3
17. 1
18. 2
19. 3
20. 3
21. 1
22. 3
23. 2
24. 2
25. 3
26. 4
27. 1
28. 4
29. 4
30. 1

Hi, can anyone tell me where did you get the Nanhua 2011 prelims Science papers?
I dun hv it in my list from jeremy...

[chrisu]

Below are a series of similar questions that I need to seek confirmation on their answers;


Q1. Worksheet given by school. School answer is (2). I think the answer should be (1) as energy is lost upon collision and thus the speed will be reduced.
http://img.photobucket.com/albums/v160/guppiesonli/Misc/F1.jpg\">

The rest are from Longman My Weekly Companion Science 5/6 Book B;
Q2. Book answer is (1) which is C only. Wonder if a stronger force will cause the Marble T to move faster too? But here I think we can't tell whether it will be faster or slower, just that there will be a change in speed.
http://img.photobucket.com/albums/v160/guppiesonli/Misc/F2.jpg\">

Q3. This one I agreed with the book answer which is (3).
http://img.photobucket.com/albums/v160/guppiesonli/Misc/F3.jpg\">

Thank you.

[cestmoi]

htn:

Newkiasu2011:

Does anyone have answers to booklet A for nan hua science prelims 2011? Pls help, if you do. TIA

Newkiasu2011

just saw your post, nan hua science prelims 2011 answers for
Section A.

1. 2
2. 4
3. 4
4. 3
5. 4
6. 3
7. 2
8. 1
9. 4
10. 1
11. 1
12. 2
13. 3
14. 1
15. 4
16. 3
17. 1
18. 2
19. 3
20. 3
21. 1
22. 3
23. 2
24. 2
25. 3
26. 4
27. 1
28. 4
29. 4
30. 1

Hi, can anyone tell me where did you get the Nanhua 2011 prelims Science papers?
I dun hv it in my list from jeremy...

[Newkiasu2011]

Hi htn,

Really appreciate your post. Thanx a lot…

Hi cestmoi,
I got the Nan Hua paper through my dd’s school.

[cestmoi]

Newkiasu2011:

Hi htn,

Really appreciate your post. Thanx a lot...

Hi cestmoi,
I got the Nan Hua paper through my dd's school.

Thanks Newkiasu2011..If its available online, hope someone can post the link.

[tianzhu]

Hi chrisu


This link may help to explain why (2) is correct for Q1.

In elastic collision, the total system momentum and total kinetic energy is conserved.

Please refer to this link.

http://www.physicsclassroom.com/mmedia/momentum/trece.cfm

Best wishes

[Nebbermind]

tianzhu:

Hi chrisu


This link may help to explain why (2) is correct for Q1.

In elastic collision, the total system momentum and total kinetic energy is conserved.

Please refer to this link.

http://www.physicsclassroom.com/mmedia/momentum/trece.cfm

Best wishes

actually, it's a bit chim for psle. remember we only learn something similar (coefficient of restitution) in 'A'.

[Nebbermind]

chrisu:

The rest are from Longman My Weekly Companion Science 5/6 Book B;
Q2. Book answer is (1) which is C only. Wonder if a stronger force will cause the Marble T to move faster too? But here I think we can't tell whether it will be faster or slower, just that there will be a change in speed.
http://img.photobucket.com/albums/v160/guppiesonli/Misc/F2.jpg\">
Thank you.

Since energy is introduced to change its direction, it shd be faster. but again, is this is psle level?

[P5G]

Please help.


http://i52.tinypic.com/i3gzux.gif\">

TIA.