Kinetic
Yes. Roughness is a general term that refers to more friction, and friction will slow motion.
Kinetic friction is any friction between objects that are in contact and have relative motion. The specific term for objects that roll across other objects is aptly called rolling friction. Rolling friction exerts its force in the opposite direction of its motion.
It's the energy an object possesses due to its motion.
Temperature.
It then presume the friction is very small and presume no friction. In fluid and piping, it mean any pressure drop term is due to fluid motion and dispersion alone.
kinetic energy is the energy of motion.
It is called kinetic energy.
Yes. Roughness is a general term that refers to more friction, and friction will slow motion.
Kinetic friction is any friction between objects that are in contact and have relative motion. The specific term for objects that roll across other objects is aptly called rolling friction. Rolling friction exerts its force in the opposite direction of its motion.
It's the energy an object possesses due to its motion.
Temperature.
It then presume the friction is very small and presume no friction. In fluid and piping, it mean any pressure drop term is due to fluid motion and dispersion alone.
Friction is a force that opposes motion. As you drive a car along an expressway, the friction from air pushes back against your direction of motion. Also, the friction between your tires and the road (rolling friction) pushes back in the opposite direction of your motion.
temperature
temperature
temperature
temperature