Page

Where exactly?

Errata

52

RHS, (v) 11th line down

58

LHS, (iii) 6 lines down

and not

61

Q 16, 4th line

 not  

83

Q20 diagram: Fig 4.65

The left mass is m not M

102

Right hand column

Heading: Conservation of Momentum [not Energy]

104

Fig 5.28 in Q 2

Radius = r and speed =

119

Q1 (ii)

Find the total horizontal distance before …

136

Fig 7.38 in Q 10

The radius is 2d

148

Q 13 (table)

The last two entries should be 6560 and 8439 (not 6570, 8469)

149

Q 1

161

Q 13 (a) (ii)

 [not 2 and 2]

189

Ex 10.E Q 5

5 (ii) … where

191

Worked Example 10.9

4th line 63 kW [Not 6.3].  In lines 3, 4, 7 and 8 of solution:

 63000 [not 6300]

192

Q 7

(ii)   not  in

209

Q12 Fig 11.59

d is too small

210

Node-Degree table

K has degree 0 [not 2]

218

Fig 11.86 in Q4

There should be no line BE

223

Worked Example 11.8

[AB] is 10  [not 6]

229

Q3 (i)

(starting at B) [not P]

231

Q6 diagram

Main road goes A to B (not B to A)

241

Q1 diagram

[CE] has weight 8 [not 5]

254

Q7 solution on Folenshive

Edge should go 1 to 5 with no dummy

254

Q8 solution on Folenshive

The dummy should be from node 7 to node 8

255

Q10 (a) 4th line down

(using exactly two dummies)

262

Q9 diagram

Left-to-right arrows along T and U

266

Fig 12.97

The upper box labelled D should be labelled B

266

Fig 12.97

F should have just one more box inside dotted line (not 2)

266

Fig 12.97

G should have two more boxes inside dotted line (not 1)

268

Last line of page

Add: But if we swap D and F (being careful to check for precedence) we can reduce the project time to 25 days with Worker 1 doing ACFIJ and Worker 2 doing BEDGH.

269

Q1 diagram

X(3) [Not X(8)]

270

Q6 Fig 12.111

Box at end of F(2) is 2/2.  Box at end of G(7) is 7/8

275

Worked Example 12.15

[CF} has weight 20

277

Fig 12.121 in Q2

Arc [CG] has length 20

284

Cider 4-1-3

165 + 335 = 500*            [Next line is 460 (not 460*)]

284

Cider 5-4-1

225 + 125 = 350

284

Pig feed 5-1-4

85 + 460 = 585

286

Q2 first line

her company’s products (not his)

287

Q3 line 4

Atiq (not Seamus)

305

Ex 1.F Q 2(a)(ii)

305

Ex 1.F Q 2(b)(iii)

<

307

Ex 3.C, Q 3 (i)

 m/s

307

Ex 3.D, Q 4 (i)

22.4 m

308

Ex 3.F, Q 5(ii)

309

Ex 4.F, Q 7(iii)

1.225 (not 1.96)

309

Ex 5.F Q3 (ii)

0.35

309

Ex 5.F Q7

9.84375 m

311

Ex 8.A Q 13 (ii)

10508 million litres (not 10568)

312

Ex 8.C Q 9

(i)    (ii) (a)  (b) 23 

(c) 20.

314

Ex 9.I Q3 (b)

(i) 160 J  (iii) 320 J

315

Ex 9.I Q 8 (iv)

1 m/s2   (not 1 m/2)

315

Ex 10.G Q3

3. (ii)

316

Ex 11.A Q9

(ii) 3  [not 2]

316

Ex 11.B 3 (a) Last answer

ADCBXYZW  [not ACBYZW]

317

Ex 11.A Q4 (a)

Last line is 10000  [not 00001]

317

Ex 11.A Q4 (e)

1, Yes, ACDEA  [not ADEBA]

318

Ex 11.F Q6 (ii)

5  [not 5, 4]

318

Ex 11.F Q10 (ii)

€53940  [not €53490]

318

Ex 12.A Q14

0 < x < 20

319

Ex 12.B

Delete answers to 6 and 9

319

Ex 12.C and 12.D

The answers to these two whole exercises to be swapped: 12.C <->12. D

319

Ex 12.F  Q4 (ii)

A, C, J. L  [not A, C, I, L]

319

Ex 12.F  Q6 (ii)

B, E, H, J, L  [not C, E, H, J, L]

319

Ex 12.H Q1

(i) SBGDT   (ii) 23 km

319

Ex 12.H Q3 (b)

ACEGI  [not SAEGI]

320

Ex 12.I Q9

(CS, Ec, AM) = (1, 3, 1) or (2, 2, 1) or (2, 1, 2) [+50%]

320

Ex 12.J Q7

(ii) Average = €21,000