4400 Higher June 2004 Paper 4 Q8
8 This formula is used in science.
\[v = \sqrt{2gh}\](a) Hanif uses the formula to work out an estimate for the value of \(v\) without using a calculator when \(g = 9.812\) and \(h = 0.819\)
Write down approximate values for \(g\) and \(h\) that Hanif could use. (2)
Write down approximate values for \(g\) and \(h\) that Hanif could use. (2)
(b) Make \(h\) the subject of the formula \(v = \sqrt{2gh}\) (2)
| Scheme | Marks |
|---|---|
| 10 & 0.8 or 9.8 & 1 or 10 & 1 | B2 |
| (2) |
Notes
B2: B1 for 9.8 & 0.8
| Scheme | Marks |
|---|---|
| \(v^2 = 2gh\) | M1 |
| \(\dfrac{v^2}{2g}\) oe | A1 |
| (2) | |
| (4 marks) |