Friction always mimics a force in a direction exactly opposite to the object's motion.
So its effect is always to rob the moving object of speed, velocity, kinetic energy,
and momentum.
Yes.
Try this experiment:
Slide a brick across any surface of adequate size. If the brick stops by itself, this is proof of the oppositional force of friction to a moving object.
This is basically described by Newton's Second Law: F=ma (force = mass x acceleration). Acceleration is the rate of change of the velocity. Solving for acceleration: a=F/m. In other words, if there is more force, there will be more acceleration; on the other hand, if an object has more mass, there will be less acceleration.
Friction is the force that results when two materials rub against each other. Air and water resist motion when a moving object pushes against them. Flowing water has a similar kind of force.
Friction provides a force, and therefore an acceleration, in the opposite direction of motion.
friction acts on materials that are in contact
it makes objects slow down because it opposes motion
Friction causes moving parts to generate heat, thus reducing the efficiency of the machine.
Friction
Friction inhibits the motion of objects.
Mainly friction.
Friction.
Friction.
Friction or Resistance
Friction!
Relative motion
Relative motion
Friction slows down the motion of objects.
Friction opposes motion or, more correctly, relative motion between two bodies in contact.Motion.
That refers to friction.