Higher June 2022 Paper 2 Q7
7 Change a speed of 81 kilometres per hour to a speed in metres per second.
(3)
| Scheme | Marks |
|---|---|
| ×1000 (÷60 ÷ 60) or ÷3600 or sight of 81 000 or 1350 or 0.0225 | M1 |
| \(\dfrac{81 \times 1000}{60 \times 60}\) oe eg \(\dfrac{81}{3.6}\) or \(81 \times \dfrac{5}{18}\) oe | M1 |
| 22.5 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: For one of ×1000 (eg sight of 81 000) or (÷60 ÷ 60) or ÷3600 oe
M1: For a fully correct method with correct use of brackets eg 81000 ÷ 60 × 60 is M1 only if not recovered
A1: or \(\dfrac{45}{2}\) or \(22\dfrac{1}{2}\)