Post M1 doubts here

[robotic94]

PS. if there is some other thread gimme the link please or else continue here



http://www.xtremepapers.me/CIE/Internat ... _qp_41.pdf

i dnt get the logic in Q1,i)

thankyou in advance!

 

[ahmed t]

well the graph shows p goin up till it reaches a maximum height at 2 seconds and then drops down after another 2 seconds
so at t=2 v=0
we can use the equation
V=U+at
V is 0
we want u
a=-10
t=2
so that will make V 20

hope it helps

 

[ahmed t]

anything else??

 

[zahraahmed]

why is the acceleration constant when the driving force is zero..........???

 

[ahmed t]

are u referring to the question above or is this another question?

 

[filza94]

Topic To Stress On Biology Paper 33 AS
Gaseous exchange
Infectious diseases
Immunity
Transport: In plants- all the pathways in the cell (apoplast n symplast)
in humans- cardiac cycle, pressure graph, etc...
Nitrogen cycle

Itx surely cuming as my Biology Teacher predicted them every year she does n it cumss last year 4 my O level also she predict so i got A* n dat all camee now she precdicted for AS Paper 33 so evryone study all topics anyway so focusing on these shouldn't make u forget the others!!!!

 

[arlery]

@filza94 how is this related to M1 doubts?

 

[zahraahmed]

guys shes wrong
just check my post!!
viewtopic.php?f=26&t=6663

 

[robotic94]

well the graph shows p goin up till it reaches a maximum height at 2 seconds and then drops down after another 2 seconds
so at t=2 v=0
we can use the equation
V=U+at
V is 0
we want u
a=-10
t=2
so that will make V 20

hope it helps

oh thanx

another one, same paper ques 3