Verified Solution • 2025–26 Session
moderate
Q5.16: NCERT Physics - Part 1 WORK, ENERGY AND POWER 5.16 Solution: Two identical ball bearings in contact with each other and…
Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V. If the collision is elastic, which of the following (Fig. 5.14) is a possible result after collision?
Step-by-Step Verified Solution
**Answer:** The first ball stops and the other two move with speeds V/2 each? No, for equal masses in elastic collision, the incident ball stops and the two balls in contact move with V/2 each (if they separate) or the first ball transfers all momentum to the second, which then collides with the third.
**Step-by-Step Explanation:**
For a head-on elastic collision between equal masses, the moving ball stops and the stationary ball moves with speed V. Then this ball collides with the third ball, transferring all momentum again. So the final result is: first two balls at rest, third ball moving with speed V.
All Questions in this Chapter
Related Learning Resources & Exam Preparation
Chapter Practice Bank
Practice all topic-wise questions from WORK, ENERGY AND POWER
Reference Textbook Solutions
Explore complete chapter exercises for NCERT Physics - Part 1
Competitive PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring