Question

list two points for friction as foe and as friend ​

Answer 1

Answer:

Advantages

1. Friction helps us in walking.
2. movement of vehicles.
3. spikes shoes for better grip.

Disadvantages

1. Damage to the machines.
2. wear and tear.
3. loss of energy.

Answer 2

Explanation:

friction as a friend

1 To hold a glass ,we have ridges on our palm ,which increases friction between palm and a glass

2Nails and screws hold the wall together due to friction

friction as a foe

1 it reduces the efficiency of machine .

2It cause wear and tear of moving parts of a machine