Physics
posted by Tony .
A boat is rowed due North at 7.0 km/h directly across a river that flows due East at 4.0 km/h. Find the boat's resultant speed.

sqrt(7^2+4^2) is the resultant.
posted by Tony .
A boat is rowed due North at 7.0 km/h directly across a river that flows due East at 4.0 km/h. Find the boat's resultant speed.
sqrt(7^2+4^2) is the resultant.