Answer
If the two constant forces are equal in magnitude but opposite in direction, then the net force on the object is zero and the object will move at a constant velocity.
Work Step by Step
For an object to move at a constant velocity, the net force on the object must be zero. If the two constant forces are equal in magnitude but opposite in direction, then the net force on the object is zero and the object will move at a constant velocity.
For example, a helicopter could lower a crate tied to the helicopter by a rope. If the tension in the rope pulling upward on the crate is equal in magnitude to the gravitational force pulling down on the crate, then the net force on the crate will be zero and the crate will be lowered to the ground at a constant velocity.
