Add Math Project 2010 : Tugasan 1

Now is the Tugasan 1, i will upload the Tugasan 2, 3 and 4 soon
I will help for the calculation only, for discussion, explanation and reflection, please try to do yourself

All the best

读书还是听书 ？

最近不懂搞什么，爱上写布落格，还用华语，不懂原因，只想写。。。。

还好，有个爱徒，Emily，她竟然帮我翻译，谢谢您，这一次再麻烦您。

谈到读书，对大部分的人来说，难过吃“粪”，也许你会说，咦，老师你很脏

对我来说，粪 = 读书，又爱又恨

一天不拉，总觉得不爽，身体不舒服，建康出问题。

一天不读，考试考不好，心里不舒服，成绩出问题。

长久不拉，身体藏毒素，口气臭，暗疮多，多病痛 ；拉了，粪又臭。

读书呢，一样的；想读，又难读；不读，又不行；读了，又不定有好成绩。

又爱又恨

读书难，正的很难。我自己也觉得难，每个月，我都买两本杂志，每个月我都读不完。为什么？这世界太美丽，太多好玩的，读到一半，想看电视，听音乐，上网，书就放一旁，一天拖一天，又到下个月，又有新杂志，又读不完了。。。！

我也做不到，我怎么要我的学生读呢？

有时，很想跟我学生说，“对不起”，我也不想逼你们，可是，粪是要拉，书是要读的。

不读不读也要读，那如何读呢？

最近，想到了办法，不要读书，听书….

Answer

F4
1b) i) Increases
ii) Because the gradient of the graph increases
c) i) Because the gravitational acceleration is 10 ms^-2

ii) Reduces due to air resistance

2a) i) going up hill

ii) going down hill

b) i) 125 m (area under the graph from 10 to 20s )

ii) – 1 ms^-2

3a) – 80 kg ms^-1

b) No, because the total momentum in a closed system is constant

4a) i) 3

ii) weight, reaction force and string tension

b) string tension = 1000 N

reaction force = 866 N

5a) i) with and without air resistance

ii) air resistance is reducing the speed of motion

b) fall at the same time

6a) the product of mass and acceleration

b) F – f = ma

c) i) F₃ = water resistance

ii) 466 N

iii) 2.33 ms^-2

7 a) 4500 x 0.1 = 450 J

b) 25 x 2π x 0.15 x 40 = 942 J

c) 450 / 942 x 100 % = 47.7 %

d) 1. as heat energy

2. as sound energy

e) Yes because it reduce the mass of the screwjack

f) 1. Ligher platform

2. reducing frictional force

8 a) i) P

ii) highest spring constant

b) 1. Diameter of the spring

2. diameter of the wire

c) Can. It will help to withstand a higher load

d) Because the elastic limit of the spring is exceeded

e) k = F/x = 500 Nm^-1

F5

1. D 2. C 3. A 4. B 5. D 6. D 7. C 8. C 9. C 10. B

11. B 12. D 13. B 14. B 15. A 16. D 17. D 18. D 19. D 20. A

1 a) Small surface area. Charges are accumulated at low surface area

b) n = Q/e = 6.25 x 10¹⁹

2 a) Ability of a conductor to resist current flow

b) voltmeter parallel to the bulb while the ammeter series to the bulb

c) the reading of the voltmeter divide with the reading of the ammeter

d) R = V/I = 10 Ω

3 a) i) 0.13 A

ii) 0.33 A

b) 22 Ω

c) i) 30 Ω

ii) 0.24 A

4a) i) It needs 240 V of input potential difference to generate 2000 W of output power

ii) I = P/ V = 8.33 A

iii) 9 A because the maximum current flow is 8.33 A

Performer + Clown + Actor = Teacher

changed, the world has changed
the bright sky, will somehow rain
the broad road, will somehow congest
changed, the world really changed
changed, even the teachers changed

sometimes I was thinking
when did I think of being a teacher?
couldn't make out of my mind
I could only say
it was 1997
my very first time

It was when the teachers were so respected
Loved and appreciated
Everyday, every class
there were always some aspirant students
wanting to learn from me
slowly, gradually
students changed
the culture of instant arose
homework, they don't do
books, are to be kept aside
examinations are just round the corner
damn...what to do?
simple, teachers will give us tips
but, are they really reliable?
no worry, teachers have some secret info from the minister
but, it still didn't help enough
take it easy, teachers have all the answers
memorize them today and get As tomorrow
get reward from mommy the day after tomorrow
and celebrate on the following day
and next week?
teacher, you're great, man!

what about the teachers that don't give tips?
doggone it, no one is coming
everyone's leaving
the class is empty
well, they shall piss off
in an antique car, CLK
brilliat student, where are you?

changed, truly changed
the teachers nowadays
have to possess 18 feats to be
they have to know how to
talk, entertain, scream, teach
they have to know
English, Malay, Cantonese, Science,
Mathematics, Physics, Music, Technology
they have to have humour, give tips
and lastly, they have to be a clown

being a clown is really difficult
performance on air everyday, they were not as easy as a breeze
really, one minute of it, takes ages to work on
every show
the clown, or rather, the teacher
have to keep the audience entertained
every show
must be guaranteed 100% high quality
every show
must ensure they went back home with Mr. Laughter
Clown is just another name for a teacher
but, what if there are teachers who refuse to humiliate themselves
be an actor then

teachers nowadays don't need knowlegde
as long as they can perform
but a good performance
from a teacher without qualification and experience
from a teacher that teaches the wrong way
Is that really okay?
but, just laughed it away, most importantly
the more fans to be, the happier you are, they are, so am I

changed, the world has changed

my dear students, smart students
please wake up!
the future's yours, wake up
road, there's no shortcut
hey, same goes to study
wake up

I'm a teacher
I'm not a performer
not a clown either
and I don't act

I'm just a teacher
A real teacher

Original Chinese version by : Loke Skywalker
Translated by : Emily Ning-Jie Lee

F4 and F5 Revision short notes (Chapter 1 and 2)

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