A crate is being pulled by a rope which is horizontal to the floor. The crate's mass is 45.0 kg and it is currently accelerating at +3.50 m/s2. The coefficient between the floor and the crate is 0.300. 

A) What is the amount of the net force acting on the crate? 

B) What is the tension on the rope? (Hint: What is the applied force, and what is pulling the crate?) 

C) If the crate started from rest, how fast will the crate be going once it is moved 6.00 m? 

D) How much force is needed on the rope to keep the crate moving at the velocity found in part C?