Explanation:
It is a 1-minute averaged measure of the hurricane's maximum winds. Westerlies are one of the breeze belts helping to shape and guide hurricanes. A tropical cyclone is a quickly spinning storm system with a low-pressure core, a closed small-level air vortex, gusty winds, and a thunder storm spiral structure that causes torrential rain or squalls.
If the boat is i travling at 10 m/s and the river is 8.0 m/s the boats speed is 18.0 m/s
Rate of speed (3 m/s north is three miles per second north, so it's a rate of speed)
