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In which of the following groups of activities is friction NOT required?

In which of the following groups of activities is friction NOT required?
A. Writing and erasing.
B. Skating and braking.
C. Flying and swimming.
D. Walking and riding.

Answers

The correct answer is C. Flying and swimming.

Friction is required to oppose motion.

sharon kalunda answered the question on July 30, 2019 at 08:02

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