1. The problem statement, all variables and given/known data One or more external forces are exerted on each object enclosed in a dashed box shown in the figures below. Identify the reaction to each of these forces, assuming that (b) occurs on Earth. Select all that apply. (b) the wagon exerts a force · downward on the Earth due to contact · downward on the Earth due to gravitational attraction · upward on the Earth due to gravitational attraction · upward to the left on the handle (???) · upward on the Earth due to contact (My choices in underline) 3. The attempt at a solution The main question I have about this problem is whether the wagon exerts a force upwards to the left on the handle. I thought that the wagon would exert a force downwards to the left on the handle, but this isn't an answer choice, so I thought that selection would be a trick question. Thanks in advance!