Question

What is the net force of this object?

F air=400N

F grav=600N

A) 0 nuetons
B) 200 nuetons
C) 400 nuetons
D) 600 nuetons

Answer 1

B) 200 Newtons

Step-by-step explanation:

We have two forces acting on the object:

- Fgrav = 600 N: this is the force of gravity, which is equal to the weight of the object, which pushes downward

- Fair = 400 N: this is the force due to the air resistance, which is against the direction of motion of the object, so for an object in free fall, its direction is upward

Therefore, we have two forces acting in opposite directions: therefore, the net force is equal to the difference between the two forces:

`F_(net)=F_(grav)-F_(air)=600 N-400 N=200 N`