Foundation January 2019 Paper 2 Q22
22 A block of wood has a mass of 3.5 kg.
The wood has density 0.65 kg/m³
(a) Work out the volume of the block of wood.
Give your answer correct to 3 significant figures. (3)
Give your answer correct to 3 significant figures. (3)
(b) Change a speed of 630 kilometres per hour to a speed in metres per second. (3)
| Scheme | Marks |
|---|---|
| \(0.65 = \dfrac{3.5}{V}\) | M1 |
| \(V = \dfrac{3.5}{0.65}\) | M1 |
| 5.38 | A1 |
| (3) |
Notes
A1: for answer in range 5.38 – 5.385
SCB1 for a “correct” equation involving \(V\) with digits 65 and 35 where units have been converted eg \(V = \dfrac{3500}{0.65}\)
| Scheme | Marks |
|---|---|
| 630 × 1000 (= 630 000) 60 × 60 (= 3600) eg 630 ÷ 60 (= 10.5) 630 000 ÷ 60 (= 10 500) 1000 ÷ 60 (= 16.66...) 1000 ÷ (60 × 60) (= 0.277...) 1 ÷ (60 × 60) (= 0.000277...) | M1 |
| \(\dfrac{630 \times 1000}{60 \times 60}\) oe or 630 ÷ 3.6 | M1 |
| 175 | A1 |
| (3) | |
| (6 marks) |
Notes
M1: for converting 630 km to m
or
1 hour to seconds
or
for correct operation(s) using at least 2 of the numbers 630, 1000, 60, 60
M1: Fully correct method