Question

How can you calculate kinetic friction without knowing the force of friction directly? a) By dividing the normal force by the coefficient of kinetic friction.

b) By multiplying the normal force by the coefficient of kinetic friction.
c) By subtracting the normal force from the coefficient of kinetic friction.
d) By adding the normal force to the coefficient of kinetic friction.

Answer 1

To calculate kinetic friction without knowing the direct force, use the equation f_k = μk N, where f_k is the force of kinetic friction, μk is the coefficient of kinetic friction, and N is the normal force.

Step-by-step explanation:

To calculate the kinetic friction without knowing the force of friction directly, you can use the equation f_k = μk N, where f_k is the force of kinetic friction, μk is the coefficient of kinetic friction, and N is the normal force. The normal force can be calculated by multiplying the weight of the object by the acceleration due to gravity.

For example, if the coefficient of kinetic friction is 0.30 and the normal force is 100 N, the force of kinetic friction would be 0.30 * 100 N = 30 N.