If a woman is pushing a cart 125 N forward and gravity is pushing 50 N backwards on the cart and a child is pushing 25 N backwards on the cart what is the net force?

Answer: 50N forward

Explanation:

A woman is pushing a cart 125N forward (+125N)

Gravity is pushing 50N backwards (-50N)

A child is pushing 25N backwards (-25N)

The net force is the total sum of these forces.

125N + (-50N) + (-25N)

125N-50N-25N

125N-75N

50N forward because it's positive