2015 PSLE Discussion and Strategies

[silverstar7]

Sctc:

Errr...for the wheelchair b is it because the surface area exposed is larger so more friction?

I think it's becauuse of the grooves... :boogie:

[ZhenghuaParent]

I got 2 for science MCQ wrong so far ;(

[silverstar7]

NerdyMath:

Sctc:

Errr...for the wheelchair b is it because the surface area exposed is larger so more friction?

I wrote the platform is rougher so it increases the friction between the wheels and the platform, so the wheelchair will not slide off.

ya that's what i put too :imcool:

[NerdyMath]

silverstar7:

NerdyMath:

[quote=\"Sctc\"]Errr...for the wheelchair b is it because the surface area exposed is larger so more friction?

I wrote the platform is rougher so it increases the friction between the wheels and the platform, so the wheelchair will not slide off.

ya that's what i put too :imcool:[/quote] :rahrah:

[silverstar7]

NerdyMath:

Sctc:

Errr...for the wheelchair b is it because the surface area exposed is larger so more friction?

I wrote the platform is rougher so it increases the friction between the wheels and the platform, so the wheelchair will not slide off.

Does anyone know the answer to 44b)? The one about the temperature.

[Lol222]

I put surface is rougher thus more friction

[Sctc]

NerdyMath:

Sctc:

Errr...for the wheelchair b is it because the surface area exposed is larger so more friction?

I wrote the platform is rougher so it increases the friction between the wheels and the platform, so the wheelchair will not slide off.

If I didn't write rough will points be deducted? :nailbite:

[Tom son]

Lol222:

i about 2 wrong

whcih one

[NerdyMath]

Sctc:

NerdyMath:

[quote=\"Sctc\"]Errr...for the wheelchair b is it because the surface area exposed is larger so more friction?

I wrote the platform is rougher so it increases the friction between the wheels and the platform, so the wheelchair will not slide off.

If I didn't write rough will points be deducted? :nailbite:[/quote]Can you write your answer here?

[Tom son]

Lol222:

a is the feather traps heat

feather has air pockets which traps heat..