Question

A boat is traveling upstream in the positive direction of an x axis at 14 km/h with respect to the water of a river. The water is flowing at 9.0 km/h with respect to the ground. What are the

(a) Magnitude and

(b) The direction of the boat’s velocity with respect to the ground? 

A child on the boat walks from front to rear at 6.0 km/h with respect to the boat. What are the:

(c) Magnitude 

(d) The direction of the child’s velocity with respect to the ground?