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Physics - Center of Mass Question with Solution | TestHub

PhysicsCenter of MassCollisionMedium2 minQB

PhysicsMediumsingle choice

A particle of mass 1 kg moving with velocity $1 m / s$ , collides elastically with another particle of mass m . In the collision particle of mass 1 kg loses $\frac{3}{4}$ of its K.E. The value of m is :

Options:

Answer:

Solution:

Losing 3/4 of its KE leaves the 1 kg particle with speed 0.5 m/s:

$\frac{1 - m}{1 + m} = \pm \frac{1}{2} \Rightarrow m = \frac{1}{3} kg or 3 kg$

Only 1/3 kg is listed. Ans. (B)

Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Collision

⏱ 2mℹ️ Source: QB

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