A solid block of 2.0 kg mass slides steadily at a velocity V along a vertical wall as shown in the figure below. A thin oil film of thickness h=0.15mm provides lubrication between the block and the wall. The surface area of the face of the block in contact with the oil film is 0.04 m² . The velocity distribution within the oil film gap is linear as shown in the figure. Take dynamic viscosity of oil as 7× Pa-s and acceleration due to gravity as 10 m/ Neglect weight of the oil. The terminal velocity V (in m/s) of the block is _________ (correct to one decimal place).