Question

Which three of the following is an example of friction that is helpful?
(3 Points)
A) Friction between a rope and a pulley
B) Tires from a car on the road
C) Tread on the bottom of your shoes
D) Friction on a bike chain
E) Brakes used on a bike
F) Friction between the blades of an ice skate and the ice

Answer 1

Answer:

A B E

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