Quick units question on uniform circular acc

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SUMMARY

The discussion focuses on a physics problem involving uniform circular motion, specifically analyzing the centripetal acceleration of an object with a period of T = 2.3 s and a radius of r = 2.80 m. The participant confirms that both (a) v dot a and (b) r X a yield values of zero. The main concern raised is about understanding the units associated with these calculations, particularly through dimensional analysis, which involves multiplying the dimensions of velocity and acceleration.

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  • Understanding of uniform circular motion principles
  • Knowledge of centripetal acceleration
  • Familiarity with vector operations (dot product and cross product)
  • Basic dimensional analysis techniques
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Homework Statement



A centripetal-acceleration addict rides in uniform circular motion with period T = 2.3 s and radius r = 2.80 m. At t1 his acceleration is = (6.60 m/s2) + (-2.40 m/s2). At that instant, what are the values of (a)v dot a and (b) r X a ?

Homework Equations



i know the answers, I am just really unsure of the units

The Attempt at a Solution



the answers are both zero but what are the units?
 
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Can you do dimensional analysis? For example v dot a has dimensions of velocity times dimensions of acceleration.
 
yeah, i got it, i just wasn't sure if that was quite the right approach
thanks though
 

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