Travis is pushing his sister Claire on a swing. Travis is pushing with 35 N to the right. Claire pushes back with 42 N to the left. What is the net force and in what direction?
7N to the left, because Fnet= the sum of all forces. The two forces are going in opposite directions. So, if 35N is negative(right) and 42N is positive (left), the sum of those is 7N.