(a) Dog's displacement da Boat's displacement do (b) FIG. 1. A dog stands on a flatboat at distance D from the shore. Problem 2 In the above figure, a 4.5 kg dog stands on an 18 kg flatboat at distance D = 6.1 m from the shore. It walks 2.4 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore