Friction I guess.
But for the star one I originally thought that we can't live that long but then I realised that just by looking at a star we really can't tell how long it stays stable for and how long it has left.

Reply 366

lolface32

Original post by Beat

Actually. I think I got 3.75.... I can't even remember now.

It was 37.5(0.3/0.008)

Reply 367

Davothebigafro

Original post by A future Midwife

That is exactly what I did! Counted all of the marks of the ones I answered just to be sure! My friend laughed at me when i told her i'd done that, but i thought my paper was missing a page! :colondollar:

Aha, you gotta make sure :biggrin:

Reply 368

rihannagirl

Original post by Kill3er

I presume so, i can't think of any other answer.
What about the last go-cart question, what was the biggest force?

air resistance i think?

Reply 369

Rohan97

Original post by lolface32

It was 37.5(0.3/0.008)

Did they give the units?

Reply 370

Minecraft27

Original post by rihannagirl

air resistance i think?

I think it's friction. Air is a gas, it really can't resist as much as the solid road can.

Reply 371

MrB24

Original post by rihannagirl

thats what i meant.. so 3000n?

yeahh.. 3000 x 25= 75,000J

Reply 372

wizard123

you'll still get a mark even if you dont get the correct answer because you showed the examiner what equation you used

Reply 373

MrB24

Original post by Minecraft27

I think it's friction. Air is a gas, it really can't resist as much as the solid road can.

No.. its air resistance. On the spec it says 'candidates should realise that most of the resistive force are caused by air resistance'

Reply 374

Kill3er

Original post by rihannagirl

air resistance i think?

That's what i put. Not sure if it was that, or friction.

Reply 375

Sumz.96

Original post by Midnight1811

What do you mean it'll be with topic 3 ? Do you know what date the chemistry unit 2 rest will be ??

Yeah the Physics unit 2 retake will be done on the same day as the Physics unit 3 exam which as far as I am aware will be on Thursday 23rd May. The chemistry unit 2 re-sit will be on the 20th of May.

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