A 1000-kg airplane moves in straight flight at constant speed. The force of air friction is 1800 N. The net force on the plane is ?
zero answer
what is sqrt(1800^2+(1000*9.8)^2) assuming the straight line is horizontal.
The net force on an object is the vector sum of all the forces acting on it. In this case, the only force acting on the airplane is the force of air friction, which is given as 1800 N.
Since the airplane is moving in straight flight at constant speed, we know that the net force on the airplane is zero. This means that the force of air friction must be balanced by an equal and opposite force. Therefore, the net force on the plane is 0 N.
To find the net force on the plane, we need to consider the forces acting on it.
In this case, there are two forces involved:
1. The force of air friction, which is given as 1800 N. This force acts in the opposite direction to the motion of the plane.
2. The force required to maintain the constant speed of the plane, which is equivalent to the force of air resistance.
Since the plane is moving at constant speed in straight flight, the net force on the plane is zero. This means that the force of air resistance must be equal in magnitude and opposite in direction to the force of air friction.
Therefore, the net force on the plane is 0 N.