Question

All of the following show friction as a useful force, except

Answer 1

having to push a rough and heavy box across the floor to move it

Explanation:

Friction is not a useful force because we have to exert even more force to push a body that is rough and heavy across the floor to move it.

• Frictional force is a force that opposes the motion of a body.
• It costs more and uses more energy to push a rough and heavy box on surface because of friction.
• This wastes energy in systems that deals with pushing.

Friction is useful in that:

• the heat energy produced when two surfaces rub together  is very useful.
• the friction between your feet and the floor keeping you from slipping  and makes walking possible.
• the tread on tires helping the moving vehicle slow down and stop when necessary.

learn more:

Friction brainly.com/question/7174363

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