2019 PSLE Discussions and Strategies (Children born in 2007)

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Nethan Nerella\" post_id=\"1938870\" time=\"1569898511\" user_id=\"178724:[quote=\"Nethan Nerella\" post_id=1938870 time=1569898511 user_id=178724]
Hi guys may I know the answer for McQ sprig question. They gave u four graphs and ask the energy and extension of sping X Y and Z. I put 1. Is it correct?[/quote]

Its four....

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What did u guys put for the toy car sliding down plastic track with a twirl question

The main form(s) of energy the toy car has at point C(Highest point of the twirl)?

[Mangopuff]

My girl says it’s easy, but at the same time hard. Seems a couple questions needs more thinking

[phtthp]

Jamer_joe\" post_id=\"1938956\" time=\"1569907311\" user_id=\"181186:

itsjustmehar\" post_id=\"1938952\" time=\"1569906802\" user_id=\"181393:

i put 2 for the spring question as they asked the elastic spring force

I think its 4 . With the top spring extending the least while the bottom spring extending the most

I also put 4 because the top spring must hold the most weight but still extend 3 cm, so with same amount of force (The graph draw a vertical line) it must extend the least as it is the stiffest

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helpthismom\" post_id=\"1938955\" time=\"1569907100\" user_id=\"149507:

Logic for Q18 related to ball drop and bounce

https://www.asee.org/documents/conferences/k12/2012/2012K12_Ball_Drop_activity.pdf

So KE transformed to GPE and SE

WHAT THE F :censored: !
2 :censored: ING MARKS GONE?
:censored: ! I GOT SCIENCE SO MUCH WRONG TOOOOOOOO???????????????????????!?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
:censored: :censored: :censored: :censored: :censored: :censored: :censored: :censored: :censored:

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AHHHHHHHHHHHHHHHHHHHHHHHHHHH MY PSLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

[N.020724rut0]

I thought that some of the kinetic energy was converted to sound energy, not lost when the ball hit the ground. So it should be KE --> PE+SE

[TGP666]

(sorry if i am too rude)

just very angry…

[phtthp]

TGP666\" post_id=\"1938962\" time=\"1569908169\" user_id=\"181285:

What did u guys put for the toy car sliding down plastic track with a twirl question
The main form(s) of energy the toy car has at point C(Highest point of the twirl)?

I put gravitational potential energy

[thebusybee]

sweetbaby\" post_id=\"1938935\" time=\"1569904076\" user_id=\"16633:

thebusybee\" post_id=\"1938923\" time=\"1569903067\" user_id=\"4562:

DS said he spotted a few tricky mcq qns which needed to read a few times to understand.
There's a qn abt young plant, after reading the graph carefully, his ans is - the seed starts to grow. Hope he got the right ans!

Can he recall the question?

Q sthg like that - what does the graph show?

Choices not in order-
1) root starts to grow at x
2) root comes out before shoot
3) seed starts to grow at x
4) **he forgot but definitely wrong**

*note - straight line is Seed Leaf, dotted line is Seed

https://postimg.cc/K1Cjd0gG