AP EAMCET · PHYSICS · Center of Mass Momentum and Collision
A bullet of mass pierces through a plate of mass and then gets embedded into a second plate of mass as shown in the figure. Initially the two plates and are at rest and move with same velocity after collision. The percentage loss in the initial kinetic energy of the bullet when it is between the plates and is_______. (Neglect any loss of material of the plates during the collision) 
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Let us suppose that the mass of the bullet is, m=10 g=10-2 kg and MA=12 kg, MB=1.49 kg , now the loss of kinetic energy of a bullet is, ∆K.E.×100=-12mv12-12mu212mu2×100=-v12-u2u2×100∆K.E.×100=-v12u2-1×100…
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