Question

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$\bold{give \: at \: last \: four \: exampls \: f \: friction \: as \: foe}$

Answer 1

1) It also opposes the motion of an object so it is very difficult to move a heavy truck as static friction is working on it.

2)It worn out the tyres of vehicles.

3) It also increase the temperature of a machine when the part of machine are continuosly colliding or rubbing.

Sorry for that I only know 3 hope it helps.

Answer 2

1) friction causes moving objects to stop or slow down.
2) friction produces heat , causing wasted of energy
3) friction causes were tear the moving part of machineries or soles of shoes and school bags
4) friction wears out materials whether they are screws , ball-bearing