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Two balls of radius r each are placed at...

Two balls of radius r each are placed at a distance R and released . The speed of each ball when they collide

A

`v = sqrt(2-Gm((1)/(R)+1/r))`

B

`v = sqrt(-Gm(1/R-1/(2r)))`

C

`v=sqrt(-2Gm(1/R+1/(2r)))`

D

`v=sqrt(-Gm(1/(2R)+1/(2r)))`

Text Solution

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The correct Answer is:
B
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