Hmm biology was hardest..additional science.. I think! *-)
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GCSE AQA Physics Exam- 11th of June- Super Hard Questions. watch
- 11-06-2008 17:31
- 11-06-2008 23:27
I agree, Biology was a *****. In fact, if you remember, it wasn't Biology, it was...erm, critical thinking...?...suggestive writing...anyhoo, it was a paper which was designed to discriminate between the "real" thinkers and the ordinary learners, right?
Remember, you need 360/400 for an A* in UMS scoring. My harshest calculations suggest:
B2: 84 UMS
C2: 92 UMS
P2: 86 UMS
ISA: 100 UMS
Final: 362/400 a low end A*.
- 12-06-2008 10:58
okay.. wow I'm on a B tho!
- 20-12-2010 13:34
(Original post by Ahmed_7)
- 28-03-2017 10:34
An ice skater of mass 60kg travelling at a velocity of 3.0m/s bumps into a stationary child skater of mass 30kg on the ice and they move together after the collision.
A: Calculate the momentum of the ice skater before the collision.
B: Show that the ice skater and the child skater moved at a velocity of 2.0m/s after the collision.
(I stole this from AQA's activity sheet )
60 * 30 = 180kgm/s - momentum of the adult -> momentum is conserved after collision -> 180kgm/s but the total mass changes to 60 + 30 -> 90 -> final speed after collision = momentum / total mass -> 180 / 90 = 2m/s