Final answer:
This involves converting potential energy to kinetic energy as a suitcase slides down a ramp and then friction works to stop the suitcase.
Step-by-step explanation:
This pertains to the concepts of mechanics in physics, specifically the transfer of potential energy to kinetic energy on a ramp, and the subsequent work done by friction to bring an object to rest over a certain distance. When the suitcase slides down the frictionless ramp, it transforms potential energy into kinetic energy. Given the absence of friction on the ramp, all potential energy lost will convert into kinetic energy. When the suitcase reaches the bottom and slides across a horizontal surface where friction is now present, a force of friction will work against its motion, causing it to decelerate and eventually stop. To solve the problem, one would need to calculate the initial speed of the suitcase at the bottom of the ramp and then use the work-energy principle to find the force of kinetic friction.