Choose the correct statement

The correct option is "Kinetic friction is greater than rolling friction".

To understand why this statement is correct, let us analyze the nature of both kinetic friction and rolling friction:
1. Kinetic Friction: This type of friction occurs when two surfaces slide past one another. During sliding, the microscopic imperfections (roughness) of the two surfaces continuously collide, catch, and shear against each other. This requires a significant force to maintain the sliding motion.
2. Rolling Friction: This friction occurs when a round object (like a wheel, sphere, or cylinder) rolls over a surface. Instead of sliding, the contact area between the object and the surface is theoretically a point or a line, and the relative motion at the contact point is zero. In reality, both the rolling body and the surface undergo slight elastic deformation. The resistance to motion arises primarily from this deformation and recovery process, which opposes the rolling motion to a much lesser extent than sliding.

Because rolling involves deformation rather than shearing and sliding of surface asperities, the coefficient of rolling friction (${\mu }_r$) is much smaller than the coefficient of kinetic friction (${\mu }_k$). Thus, for a given normal force, kinetic friction is significantly greater than rolling friction.