Question

Which of the following is not true? (a) Friction wears down machine parts. (b) Friction helps us walk. (c) Friction helps a ship move through water. (d) Friction produces heat.

Answer 1

(c) Friction helps a ship move through water...

Is your answer....

Hope it will help :)

Answer 2

Answer:

(c) is not true.

Explanation:

For a, friction does wears down machine parts,  that's why machine part needed to be lubricated / change a new part.

For b, yes, without friction, we will be forever sliding on ground.

For c, no, bouyancy helps a ship to float, and it may depend on the motor that produces backward force to move, or depend on the current of water.

For d, yes, friction produces heat, try rubbing your hand.