JEE Main 2022 Physics question

A block of mass 2 kg moving on a horizontal surface with speed of 4 enters a rough surface ranging from x = 0.5 m to x = 1.5 m. The retarding force in this range of rough surface is related to distance by F = −kx where k = 12 . The speed of the block as it just crosses the rough surface will be :

• (1)Zero
• (2)1.5
• (3)2.0 Correct
• (4)2.5