Describe what causes friction between surfaces

2 answers:

8 0

Some things that causes friction between surfaces is a bike on a rocky road. The action of one surface or object rubbing against another causing friction. Im not really sure if I helped But yeah..

leva [86]2 years ago

8 0

If you look two surfaces at microscopic level, you'll see that they have tiny interlocks. When you bring two surfaces in contact, they are held together strongly because of this interlocks which makes two objects difficult to perform motion.

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Answer:

b. less than w.

Explanation:

In this question, the application of length contraction is what helps us come to our conclusion. When an object moves very fast (relative to the observer), the length of the object seems to be smaller than it actually is (again, for the observer).

This is supported by the length contraction equation below:

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