2) Assumes International System of units (angles in radians, etc) The dog Snoopy of mass 0.855 kg is at the end of a boat of mass 0.451 kg and length 0.457 m that is initially at rest with respect to the shore and in east-west direction. Said dog walks east to the other end of the boat and there it remains at rest. Assume that the length of the dog is 0. Find the length "dx" that the center of the boat travels to the east.