A student is sitting in a chair and not moving, however, there are forces acting on her. What must be trust about the forces acting on the student?

I dont understand the qustion??

Explanation:

It is trusted that the sum of all forces acting on the student, adds up to zero the student is not moving.

Explanation: the plane they give you that the plane is moving at a constant velocity of 250 m/s this means that the acceleration is zero, we substituted in the formula F=ma which will give us the Force. And knowing that its constant speed, forward force is then equal to the Air resistance. Hence we find the Air resistance force

temp rises, and expansion

you can cut your hand off if your not