JEE Main Physics question
Three identical spheres lie at rest along a line on a smooth horizontal surface. The separation between any two adjacent spheres is . The first sphere is moved with a velocity towards the second sphere at time . The coefficient of restitution for collision between any two blocks is . Then choose the correct statement.
Answer: (B)
Solution
Sphere 1 covers the gap at speed , taking to reach sphere 2. With and equal masses, after collision: , . Sphere 2 then crosses the next gap at , taking .
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