Question 6
Four particles $$A, B, C, D$$ of mass $$\frac{m}{2}, m, 2m, 4m$$, have same momentum, respectively. The particle with maximum kinetic energy is :
Solution
All have same momentum $$p$$. $$KE = \frac{p^2}{2m}$$.
Smallest mass has maximum KE. Particle A has mass $$m/2$$ (smallest).
The correct answer is Option (2): A.
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