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A child attaches a rubber ball to a string and whirls it around in a circle overhead. If the string is 0.2 m long and the ball's speed is 16 m/s, what is the ball's centripetal acceleration?

 


 _______ m/s2

 

 

i got 100 but it turn out wrong 

 Jul 5, 2020
 #1
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a= v2/r      =  ( 16^2) / .2 = 1280 m/s2

 Jul 5, 2020

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