Mass = 2kg
coefficient of static friction (s)= 0.6
coefficient of kinetic friction (k)= 0.2
Minimum horizontal force required to move the block is the same as static friction. Because unless you overcome static friction, you can't move the block.
So force(F) = smg = 0.6×2×10 = 12N
12N force continues to act. Once the block starts moving, Instead of static friction, kinetic friction will start acting.
Kinetic friction(K) = kmg = 0.2×2×10 = 4N
Net force = F-K = 12-4 = 8N
Acceleration(a) = Net force/mass = 8/2 = 4m/s²
Initial velocity (u)= 0
After 2 seconds, velocity = u + at = 0+4×2 = 8m/s