* Constant Velocity: The object moving at a constant velocity means its acceleration is zero.
* Newton's First Law: Zero acceleration implies that the net force acting on the object is zero.
* Forces at Play: The forces acting on the object are the applied force (pushing or pulling the object) and the frictional force opposing its motion.
* Equal and Opposite: For the net force to be zero, the applied force and the frictional force must be equal in magnitude and opposite in direction.
* Work: Work is done when a force moves an object over a distance. Since the applied force and frictional force are equal in magnitude, the work done by the applied force is equal to the work done against friction.
In simpler terms: To keep the object moving at a constant speed, you need to put in enough energy to overcome the friction. The work you do (by applying the force) directly goes into fighting the friction.
