Answer
If an object is acted on by a single constant force:
- it is not possible for the object to remain at rest,
- it is not possible for the object to move with constant velocity,
- it is possible for the object’s speed to be decreasing, and
- it is possible for the object to change direction.
Work Step by Step
Only when the net force exerted on the object is zero would an object remain at rest or move with constant velocity. Since there is only one constant force acting on the object, its acceleration cannot be zero. Thus, the object cannot be at rest or move at a constant velocity.
If the object is already moving at some velocity and the applied force is the breaking force, the object's speed may decrease.
There is a possibility of a change in direction if the force exerted is at an angle with the direction of motion.
