You are dragging a block on a surface with friction at a steady speed of 2 m/s and exert a force of 5 n to do so. what is the force of friction?

Friction = 5 N

Explanation:

As we know that block is moving at constant speed

So the acceleration of the block is zero

So we will have

for net force to be zero

Force exerted on the object by external system must be counter balanced by the force of friction

So we have

so we have

it doesn't. it was imagined up in the middle ages.