A motorboat travelling 5.0 m/s [E] encounters a current travelling 2.5 m/s [S].

What is the resultant velocity of the motorboat with respect to the shore?

If the river is80 meters wide, then how much time does it

take the boat to travel shore to shore?

What distance does the boat travel down the river (downstream) once it reaches the opposite side of the river? (Hint: the current brings the boat down the river *draw a schematic*)

*please provide an explanation