# A conceptual question about work

Consider an object of mass $5kg$ on a plane. If a horizontal force of $10N$ acts on the object for a time interval of a second. Calculate the work done on the object by the force given that the force of kinetic friction on the object is $5N$.

The acceleration due to the net force is $1m/s^2$. So the distance moved in the direction of the force when the force was being applied is $0.5m$.

Here is what I am confused about. While calculating the work using the formula $$W=F.s$$ should we plug in the net force on the object that is the (Horizontal force exerted - the frictional force) or should we just plug in the horizontal force?

• Please see our guide on writing good titles.
– user10851
Apr 16, 2016 at 18:31