rope is used to apply a force of 240 N to a 50 kg crate to pull it down a rough inclined surface at a CONSTANT VELOCITY. The inclined surface makes an angle of 12° with the horizontal as shown in the diagram below. 2.1 State Newton’s Second Law of Motion in words. (2) 2.2 Draw a labelled, free-body diagram of all the forces acting on the crate. (4) 2.3 Define the term kinetic frictional force. (2) 2.4 Calculate the: 2.4.1 Magnitude of the kinetic frictional force between the crate and the rough inclined surface (4) 2.4.2 Value of the coefficient of kinetic frictional force (μk) between the crate and the rough inclined surface (4) [16] 12°