Respuesta :

The magnitude of the force of kinetic friction acting on an object is fk = mkN, where mk is the coefficient of kinetic friction. For most surfaces, mk is less than ms.

Answer:

The magnitude of the kinetic frictional force is 25 N.

Explanation:

Kinetic frictional force :

A force which is act between moving surface it is called kinetic frictional force.

When an object moves on the surface then it experienced a force in the opposite direction of its movement.  

The friction force always acts opposite of the actual force.

The kinetic friction force is defined in mathematically terms

[tex]F_{\mu}=\mu N[/tex]

Where, N = normal force

[tex]\mu[/tex] =  friction coefficient

According to figure,

Hence, The magnitude of the kinetic frictional force is 25 N.

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