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An object of mass collides with another object of mass , which is at rest. After the collision the objects move with equal speeds in opposite direction. The ratio of the masses is
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Correct option is B
Before collision, u1=u;u2=0, After collision v1=−v;v2=v If the collision is elastic, then we can write u1−u2=v2−v1 ⇒u=2v -----(1)Applying principle of conservation of momentum m1u=m2−m1v -----2From (1) & (2) we get m2m1=3Similar Questions
A body of mass m moving with velocity v makes a head-on collision with another body of mass 2 m which is initially at rest. The loss of kinetic energy of the colliding body (mass m) is
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