Physics - Center of Mass Question with Solution | TestHub

PhysicsCenter of MassCollisionMedium2 minQB

PhysicsMediummultiple choice

Two balls each of mass m collide as shown in figure. Choose the correct option(s)

Options:(select one or more)

Answer:

A, B, C, D

Solution:

$e = \frac{v _{se p}}{v _{a pp}} = \frac{\int F _{R} d t}{\int F _{D} d t} = \frac{10}{10} = 1$ , so the collision is elastic (D correct) and the impulse ratio is 1 (A correct).

Deformation impulse $J_{D} = \frac{m}{2} (10) = 5 m$ N-s, hence reformation impulse $J_{R} = e J_{D} = 5 m$ N-s on B (C correct).

Maximum PE = relative KE lost = $\frac{1}{2} \cdot \frac{m}{2} (10)^{2} = 25 m$ J (B correct).

Subject:PhysicsTopic:Center of MassSubtopic:Collision

⏱ 2mℹ️ Source: QB

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