It depends on the direction of the two forces. If the two forces are in the same direction, the net force would be 60N or -60N. If the two forces are in opposite directions the net force would be either 30N or -30N.
net force=75-30=45N
friction
Friction will stop it.
Friction
kinetic friction
Static friction
the paper slows down due to gravity, and friction, there are small hills and valleys that are not seen.
Because of the forces that act on the ball in the direction opposite to its motion ... air resistance and friction with the floor.
kinetic friction
friction
Because of the friction in the carpet fibers.
Ice and marble floor have little friction and results in objects slidding as they go across the surface.
Static Friction