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physics AS HELPPP

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halosh92:
2005 nov paper 1:
Q6
Q7
Q8
Q12
Q21
Q31

astarmathsandphysics:
6)B acceleration of gravity is constant 9,8
7)C use s=ut+1/2at^2 twice


subtract



8)A zero speed at start then constant force means constant acceleration hence gradient

astarmathsandphysics:
12)moments about P
10*0.6+100*0.1=20x+0.4*20
16=20x+8 so x=0.4
D
21)Y=Fl/Ae
e=Fl/AY
half the diameter means 1/4 of area so 1/4/1/4=1 and extension is not changed
C
31)F=Eq=V/d*q=200/5*10-3 *1.6*10^-19 =6.4*10-15
A

tmisterr:
ur welcome :)

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