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kenny6666 [7]
3 years ago
9

When you ride a bicycle,when is friction helpful and not helpful

Chemistry
2 answers:
Alex Ar [27]3 years ago
8 0

Friction is helpful when riding on dirt or cement but it isn't when in rain or mud.
deff fn [24]3 years ago
3 0
It is helpful because it has reaction with road
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