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Questions  

If two masses m1 and m2 collide, the ratio of change in   magnitude of their respective velocities is proportional to

a
m12m22
b
m1m2
c
m2m1
d
m2m1

detailed solution

Correct option is C

from conservation of momentum m1u1+m2u2=m1v1+m2v2 m1u1-v1=m2v2-u2 u1-v1v2-u2=m2m1

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 Three particles each of mass m are located at vertices of an equilateral triangle ABC. They start moving with equal speeds each along the meridian of the triangle and collide at its center G. If after collisions A comes to rest and B returns its path along GB, then C


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