Generally, sliding friction is much stronger than rolling friction.
Friction
Mainly friction.
Friction.
Friction.
Friction or Resistance
Friction!
Relative motion
Relative motion
The direction of friction on the crate is opposite to the direction in which it is sliding. In this case, since you are pushing the crate to the right, the friction will act to the left in order to oppose the motion.
Friction opposes motion or, more correctly, relative motion between two bodies in contact.Motion.
Oppose motion.
Friction.