A cyclist is going in a straight line at a unifrom velocity `18 km//h`. The resistance force can be expressed as force `kv^(2)` where `k=0.8` where velocity is in `m//s` and unit of force is newton. The mass of the cyclist with the bicycle is `100 kg`. Neglect the rolling resistance force. If the power of the cyclist during the ride is `10^(x)` watt, then what is `x` ?

Explanation

`P=kv^(2)(v)`
`=kv^(3)=0.8xx(18xx(5)/(18))^(3)=100`watt