Consider the following statements regarding friction:
Statement 1: Friction always acts in the direction opposite to the motion.
Statement 2: Friction depends only on the material of the objects in contact.
Statement 3: Increasing the weight of an object increases the frictional force.
Statement 4: Lubricants increase friction by making surfaces stickier.
1
Statements 1 and 3 are correct.
2
Statements 2 and 4 are correct.
3
Statements 1, 2, and 3 are correct.
4
Statements 1 and 2 are correct;