Using a horizontal force of 200n, we intend to move a wooden cabinet across a floor at constant velocity. what is the friction force that will be exerted on the cabinet?
with explanation

-200 N

Explanation:

The cabinet moves at constant velocity, so that means there's no acceleration.

Applying Newton's second law to the cabinet:

∑F = ma

F + 200 = 0

F = -200

The friction force is 200 N in the opposite direction.