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November 01, 2025, 10:46:49 am
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Author Topic: exam 2 vcaa 2007/2008  (Read 572 times)  Share 

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vidang

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exam 2 vcaa 2007/2008
« on: November 01, 2010, 09:46:35 pm »
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2007 VCAA
linear:
q1c: i keep getting 76km/h
s=d/t=190/2.5=76km/h
explain to me why its 95km/h

q2d: dont get this at all

networks
q3c: why is it not 8?
explain why its 7

2008 VCAA
question 2a
why is S2 = Ts1
why isnt it T^2xS1

thanks
« Last Edit: November 01, 2010, 10:08:36 pm by vidang »
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77.85.. is the number I better wake up to on the morning of December 13th

jasonn93

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Re: exam 2 vcaa 2007/2008
« Reply #1 on: November 02, 2010, 12:31:59 pm »
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Q1c - It is 95 km/h because the car is only moving from 10am to 12pm, therefore the time is 2 hours, not 2.5 hours.
Q2d - It states that they are travelling at 85 km/h. Therefore read off the graph, or solve for fuel usage using G = 15-0.06 * 85. After finding G = 9.9, then you know that every 100 km, 9.9 L are used. 9.9 * 0.80 = $7.92

2008 VCAA, I think you're talking about the Matrices section yes? You cannot assume that S0 is the initial state matrix, as S1 is given as the initial. Therefore treat S2 as you would normally S1.
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