A force of 672n is required to start a 70 kg box moving

Question

Solve the all parts of given question:

Question: A force of 67.2N is required to start a 7.0 kg box moving across a horizontal concrete floor.

Part A: What is the coefficient of static friction between the box and the floor?

Part B: If the 67.2N force continues, the box accelerates at 0.50m/s². What is the coefficient of kinetic friction?

Any help would be really appreciated! Thank you so much!