plz. answer

A Boat Crossing 3 River - A boat crossing a river moves with a speed of 10.0km/h relative to the water. The water in the river has a uniform speed of 5.00km/h due east relative to the Earth. - If the boat heads north, determine: a) the velocity of the boat relative to an observer standing on either bank b) the speed and angle of motion of the boat 0) if the river is 4 km wide, the time it will take for the boat to reach the other bank d) location where the boat will land e) total distance travelled by the boat