Answer:
87.1 mph
Step-by-step explanation:
We are given that
Mass,m=60 kg
Power,P=340 W
Speed,v=5 m/s
Area,

Drag coefficient,

Coefficient of rolling resistance,

Friction force,

Where

Let speed of cyclist=v'
Drag force,

Density of air,


Power,P=




1 m=0.00062137 miles
1 hour=3600 s