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sukhopar [10]
3 years ago
11

Friction is generated when?

Physics
1 answer:
valkas [14]3 years ago
8 0
Things are rubbed against each other
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A. Group of cross country runners decided to go on an hour and a half run. During the first hour, they ran a total of 13 kilomet
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The average speed for the entire run is 12 km/h.

Explanation:      

The average speed is given by the following equation:

\overline{v} = \frac{d_{T}}{t_{T}}

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t_{T}: is the total time

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Hence, the average speed is:

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Therefore, the average speed for the entire run is 12 km/h.

I hope it helps you!                                                                                      

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