question_answer

Two bodies of equal masses m1 and m2 moving along the same straight line with velocities + 3 m/s and - 5 m/s respectively collide elastically, their velocities after collision will be :

A)  - 5 m/s, 3 m/s                  

B)  - 6 m/s, 4 m/s

C)  - 4 m/s, both                    

D)  3 m/s, - 5 m/s