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30-08-2021
Physics

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PHYSICS!
WORTH 10 POINTS!
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Useful forces help us while unwanted forces hinder us!

Explain whether friction is a useful or unwanted force based on what has been covered in the lesson.

Write at least 3 sentences in your response

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30-08-2021

Answer:

Friction is useful in some cases like walking and cycling ..

but it is unwanted in machines as it create unwanted sounds and heat .,due to which we loss energy

Explanation:

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