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Answers to numerical questions

2. (b) (i) 25 cm Chapter 8
(ii) 700 g (0.7 kg) Exercise 8.1

9. 24 N 1. (b) 200 m/s

2. 6.25 m/s
3. (a) 25 m/s
Chapter 7
(b) 1 500 m
Exercise 7.1 4. (a) 14 km
1. 250 N/m ,125 N/m 2 (b) 10 km
2
2. 537 772.5 N/m 2 5. 45 km/h
3. 10 000 N/m 2

4. 10 500 N/m , Exercise 8.2
2
7 000 N/m . 1. (b) 180 m (c) 160 m
2
2. (b) 90 m
Exercise 7.2 3. (b) (i) 525 m

1. (b) 6.8 m (ii) 25 s
(iii) 30 m/s
Answers to Revision exercise 7 (iv) 525 units
1. (i) c (vi) c
(ii) a (vii) c Exercise 8.3

(iii) d (viii) c 1. (a) 4.17 s
(iv) b (ix) d (b) 0 m/s

(v) a 2. (a) 42 m/s
(x) 1. I 4. G (b) 208 m
2. B 5. J

3. C 3. (a) 60 m
4. (b) 0.34 m (b) 13 m/s
4. 200 m.
7. 179 800 N/m 2

10. 106.3 kPa Exercise 8.4
1. (a) 20 m/s
11. (a) 2.74 ×10 N
11
(b) 20 m
12. 3.265 cm, 153.125 N 2. (a) 2.94 s
(b) 6.88 s
15. 6 times 3. 5 m/s

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Physics Form 1 Final.indd 231 16/10/2024 20:59