What force in newtons is needed to accelerate a 40 kg mass across a surface at 7.5 m/sec²?

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

58750.08068 is the answer i think