kpmt suggested ansq1 penangs
TRANSCRIPT
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PENANG ADDITIONAL MATHEMATICS PROJECT WORK 2015 SUGGESTED ANWSER BY www.addmathsprojectwork2015.blogspot.com
Question 1 1. (a)
(b)
(c) Rate = 5 cm3s-1
yy
V
yy
V
yy
V
dyyV
dyxV
y
y
y
22
)0(22
02
2
22
)2(
2
22
0
2
0
0
2
st
scm
cm
t
cmV
V
19.24
5
2
77
2
77
)7(22
)7(
13
3
3
2
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2. a) [IM NOT SURE ABOUT THIS, PLEASE LET ME KNOW IF THERE IS ANY MISTAKE]
b)
y 0 1 2 3 4 5 6 7
dt
dy
0.00 1.57 3.77 6.60 10.00 14.14 18.85 24.19
The rate increase as the value of y increase. [EXPLAIN MORE] 3.
a)
b) The height of the cup is 7, thus
Yes, this is very effective in reducing the time to fill up the coffee.
y 0 1 2 3 4 5 6 7
dt
dy
0.00 12.50 13.33 16.25 20.00 24.13 28.57 31.13
5
2
10
5
12
2
22
2
2
2
yy
dt
dy
yy
coffeeofvolumetheinChange
yy
V
1
20
22
10
1
102
2
2
2
yy
y
yy
y
coffeeofvolumetheinChangeNew
st
scm
cm
t
cmV
89.3
13.31
2
77
2
77
13
3
3