Respuesta :

Answer:

15 N North

Explanation:

From the question given above, the following data were obtained:

Force of air (Fₐ) = 40 N North

Force of gravity (F₉) = 25 N South

Net force (Fₙ) =?

The net force causing the box to accelerate can be obtained as follow:

Fₙ = Fₐ – F₉

Fₙ = 40 – 25

Fₙ = 15 N North

Thus, the net force causing the box to accelerate is 15 N North