Question

Which of the following is NOT an example of friction as a helpful force?

A.Using your hand to wave hello to a friend

B.Using a cloth to clean a pair of glasses

C.Using a marker to draw a picture on paper

Answer 1

Using your hand to wave hello to a friend

Step-by-step explanation:

The other two are helpful friction scenarios while A. isn't applicable.

Hope it helps :) !!!

Answer 2

A.

Step-by-step explanation:

By waving your hand you do not rub against anything else therefore friction is not possible.