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State whether the following statement is...

State whether the following statement is true or false-"When a person walks on a rough surface,the frictional force exerted by the surface on the person is opposite to the direction of his motion".

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JBD PUBLICATION-LAWS OF MOTION-EXAMPLE
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  12. Arrange coefficient of limitin friction (mu1) ,coefficient of kinetic ...

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  14. If angle of friction is 30^@,calculate the coefficient of friction.

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