Q. Two identical balls A and B having velocities of 0.5 m/s and -0.3 m/s, respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be
A) -0.5 m/s and 0.3 m/s
B) 0.5 m/s and -0.3 m/s
C) -0.3 m/s and 0.5 m/s
D) 0.3 m/s and 0.5 m/s
Explanation
[Solution] Equal masses exchange velocities in an elastic collision: B gets 0.5 m/s and A gets -0.3 m/s. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.