(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The sweep-second hand of a clock is 3.1 cm long.

What are the magnitude of (a) the average

velocity and (b) the average acceleration of the

hand’s tip over a 5.0-s interval? (c)what is the angel between the average velocity and acceleration vectors?

2. Relevant equations

a= v^{2}/r

3. The attempt at a solution

Ok so I have been working on this problem for about an hour and its starting to annoy me I can't seem to find the velocity vector since I am not given a time frame besides the one for the acceleration. I know that I can find acceleration as soon as I find velocity but I don't have any formulas or any thought on how to go about solving for average velocity. I also know that the answer for part c is 90 degrees since they are always perpendicular so really its just part a that is giving me so much trouble.

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# Homework Help: Circular motion velocity

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