A cyclist is moving at $5\,\text{m s}^{-1}$ and a small car is moving at $12\,\text{m s}^{-1}$. Which statement is not a sensible estimate?
- AThe kinetic energy of the cyclist is $1 \times 10^{3}\,\text{J}$.
- BThe kinetic energy of the car is $7 \times 10^{4}\,\text{J}$.
- CThe momentum of the cyclist is $4 \times 10^{2}\,\text{kg m s}^{-1}$.
- DThe momentum of the car is $2 \times 10^{5}\,\text{kg m s}^{-1}$.