You are to make four straight‐line moves over a flat desert floor, starting at the origin of an xy coordinate system and ending at the xy coordinates (−140 m, 30 m). the x component and y component of your moves are the following, respectively, in meters: (20 and 60), then (bx and −70), then (−20 and cy), then (−60 and −70). what are (a) component bx and (b) component cy? what are (c) the magnitude and (d) the angle (relative to the positive direction of the x axis) of the overall displacement?