Question: A dockworker loading crates on a ship finds that a 24-kg crate, initially at rest on a horizontal surface, requires a 75-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 51 N is required to keep it moving with a constant speed.
Part A: Find the coefficients of static and kinetic friction between crate and floor.
If possible just a brief explanation how you got the answer? Thanks.