Question

What are 5 examples of when friction is not needed or is deemed useless?

Answer 1

1. When riding a bike that is not well-oiled, friction will make your bike noisy and it will slow it down.

2. When getting your hair done and the comb/brush doesn't run through your hair smoothly or easily.

3. When you are sliding down the stairs sitting down.

4. When you are racing your friend on roller skates, again, friction will slow you down some.

5. In forests, friction is not needed because when friction is present between branches it can cause forest fires. We already know why this is bad or not the best option.