Question

if a person pulls on a cart to the right with a force of 10 Newtons and a second person pulls to the left with a force of 3 Newtons what is the net force + Direction on the cart​

Answer 1

The plus direction is going to go with the 10N to the right. Since the second force is applied in exactly the opposite direction, the net force 10 - 3 = 7 newtons to the right.