If you use a horizontal force of 30 N to slide a 12 kg wooden crate across a floor at a constant velocity, what is the coefficient of sliding friction between the crate and the floor? I can pretty much understand what to do, but the constant velocity is confusing me.

Question

If you use a horizontal force of 30 N to slide a 12 kg wooden crate across a floor at a constant velocity, what is the coefficient of sliding friction between the crate and the floor? I can pretty much understand what to do, but the constant velocity is  confusing me.

azureilai · Answer

Constant velocity would mean no acceleration, so I don't know how to find frictional force