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 8.2 km/h with respect to the ground. What are the (a) magnitude and (b) 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 and (d) direction of the child's velocity with respect to the ground?

Explanation

(a) 6 km/h, (b) +x, or upstream, ( c) `(0km//h)hati`