The coefficient of **static friction is 0.357** and the coefficient of **kinetic friction is 0.265.**

**Explanation:**

Coefficient of **static friction** is defined as the **proportionality constant** for the** frictional force **between the** crate and floor** for **starting the motion **of crate and normal force acting on the crate. As the** normal force** of the crate is equal to the** influence of acceleration **due to **gravity **acting on the** mass of the crate**, the frictional **force for static friction** coefficient will be the **force applied** to move the crate.

Thus,

Since, the static friction force is 70 N, the normal force is equal to

So normal force is 196 N and static force is 70 N, and the ratio of static friction force to the normal force will give the coefficient of static friction.

Similarly, the **coefficient of kinetic friction** can be determined from the** ratio of kinetic friction force to normal force**. Here the **kinetic friction** force will be equal to the **force** applied on the **crate** to **keep it moving.**

Thus, the coefficient of **static friction is 0.357** and the coefficient of **kinetic friction is 0.265.**