Answer:Because it likes to repel and attract opposites
Here, Initial momentum = mu = 6*2 = 12 Kg m/s
Final momentum = mv = 6*4 = 24 Kg m/s
In short, Your Answer would be Option C
Hope this helps!
1-D Eustress is a positive response
2-B resistance
3-A Imagine you are doing your gymnastics
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Radial acceleration is given by

where

then

Now

Using the relation


Putting into rpm