1.

A particle is moving along a circular path. The angular velocity, linear velocity, angular acceleration, and centripetal acceleration of the particle at any instant, respectively, are \[\vec{w},\,\vec{v},\,\vec{\alpha }\,and\,{{\vec{a}}_{c}}\]. Which of the following relations is not correct?

A. \[\vec{w}\bot \vec{v}\] 
B. \[\vec{w}\bot \vec{\alpha }\]
C. \[\vec{w}\bot {{\vec{\alpha }}_{c}}\]   
D. \[\vec{v}\bot {{\vec{\alpha }}_{c}}\]
Answer» C. \[\vec{w}\bot {{\vec{\alpha }}_{c}}\]   


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