Two stars each of mass 'm' and radius 'R' approach each other to collide head-on. Initially the stars are at a distance r(>>R). Assuming their speeds to be negligible at this distance of seperation, the speed with which the stars collide is?
Asked by nasir.mirza
13th June 2018,
8:05 PM
Answered by Expert
Answer:
Initially both the stars are having potential energy 
, where r is the separation distance from centre of one star to centre of other star.
, where r is the separation distance from centre of one star to centre of other star.When they collide all the potential energy is converted to kinetic energy , hence 
Answered by Expert
14th June 2018,
4:33 PM
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