The flow of water in a river at the banks is slower than at the middle of the river. Explain.

(N/A) The flow of water in a river is governed by the property of viscosity.
$1$. Near the banks,the water molecules experience adhesive forces between the water and the solid surface of the river bank.
$2$. These adhesive forces create a resistive force (viscous drag) that opposes the motion of the water,causing the velocity to decrease significantly near the banks.
$3$. In the middle of the river,the water molecules are far from the banks,so the effect of adhesive forces is minimal.
$4$. Consequently,the velocity of the water flow is higher in the middle compared to the banks.