Question

3 disadvantage of friction​

Answer 1

Oppose motion.

Produce heat in moving parts of machines/engines.

Produce noise in machines /engines.

Makes engines to consume more fuel, in other words it reduces the efficiency of engines.

Answer 2

Answer:

$<font color=blue>$

✔️friction wears away the sole of our shoes

✔️due to friction between the surface of the tyres and the surface of road ,the tyre wear out gradually

✔️friction produce unwanted heat which can damage and reduce the efficiency of Machines. in case of machine ,the production of heat leads of wastage of energy