0-kg crate is moving to the right on the floor with a speed of 25. The coefficient of kinetic friction between the crate and the floor is 0. What is...

A 20.0-kg crate is moving to the right on the floor with a speed of 25.0m/s. The coefficient of kinetic friction between the crate and the floor is 0.5 . What is the speed of the crate after 3.0 seconds? please be specific on each step, I have been stuck on it for a while.