posted by Iman on .
A person can row a boat at a rate of 25 m/s in still water. The person heads the boat directly across a stream that flows at a rate of 9 m/s. Find the resultant velocity of the boat.
I don't know
A person can row a boat at a velocity of 6 km/hr in still water. If the person heads upstream when the river flows downstream at a speed of 2 km/hr. Determine the magnitude and direction of the boat's resultant velocity.