2019 PSLE Discussions and Strategies (Children born in 2007)

[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

[TGP666]

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:

[TGP666]

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

[TGP666]

phtthp\" post_id=\"1938969\" time=\"1569908410\" user_id=\"35251:

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

No kinetic energy?

[whitecarrotcake]

Username123\" post_id=\"1938958\" time=\"1569907597\" user_id=\"176072:

I put kinetic to potential as during the moment when the ball is bouncing on the floor, it bounces back up so should be _____ to gpe. Since sound energy is lost and not being converted into gpe(or else the ball will keep bouncing), hence, answer should be ke to gpe.

Also, what are the answers for seed leaf mass qns

What is the qn and the options for this kinetic energy qn?