The hulls of some high-performance racing kayaks are constructed from modern composite materials, whereas traditional models are built using Western Red Cedar wood.
The table below contains information about a glass fibre composite and Western Red Cedar wood:
| Property | Glass fibre composite | Western Red Cedar wood |
|---|---|---|
| Relative strength | 1200 | 45 |
| Relative cost | High | Low |
| Density in kg/m3\text{kg/m}^3kg/m3 | 1900 | 380 |
| Disposal at end of life | Difficult to recycle | Biodegradable / can be burned |
Glass fibre composite consists of thin glass fibres embedded within a polymer resin matrix.
What type of material is glass fibre composite?
Calculate the volume of Western Red Cedar wood required to build a kayak hull of mass 5.70 kg5.70\text{ kg}5.70 kg.
Use the table and the equation: Density=MassVolume\text{Density} = \frac{\text{Mass}}{\text{Volume}}Density=VolumeMass