Answer
P = 743 W per rider
P = 0.996 hp per rider
Work Step by Step
We can find the total power required by the team.
$P = F~v = (165~N)(9.00~m/s)$
$P = 1485~W$
Since the team has two members, each person produces half of the power. Each member produces $\frac{1485~W}{2}$, which is 743 W.
We can convert this to units of horsepower.
$P = (743~W)(\frac{1~hp}{746~W}) = 0.996~hp$
