Linda has a cup of coffee sitting in the cup holder in her car. she has to suddenly slam on her brakes and stop. the cup remained in the cup holder, but the coffee splashed and spilled everywhere. newton's law can best describe why this happened.

Newton's First law can best describe the situation that has been given in the question. Newton's First law states that a body will remain in motion or in a static state unless acted upon by a opposite force. In this case the car driven by Linda was travelling in one direction until Linda slammed the brakes and the opposite force started acting on the car. The coffee cup also stopped, but the coffee moved in the direction the car was moving.