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Biology, 01.10.2019 16:30 xXFLUFFYXx

Why is the friction force considered to be a contact force?

a.) friction affects only solid objects.

b.) friction is produced when objects slide past one another.

c.) friction always acts in the same direction.

d.) friction acts in a direction opposite to the direction of an object's motion.

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Why is the friction force considered to be a contact force?

a.) friction affects only...

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