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```        A particle moves in circle of radius R=21/22m with const. speed of 1m/s. Find:
a) Magnitude of avge.velocity=?
b)Magnitude of avge.Acceleration in 2sec=?```
7 years ago

147 Points
```										Dear Chilukuri
distance travell in 2 sec = 1* 2 =2m
=2*22/21  * 180 *7/22  degree
= 120 degree
avg  velocity = total distance /time
= (√3 /2  * 21/22)/2  =.413  m/sec
avg acceleration  = change in velocity /time
=| 1 i  -(-√3 /2 i - 1/2 j)|/2
=|3/2 i+√3 /2j|/2
=√3/4  m/sec2
Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the
```
7 years ago
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