Question

Two masses of a and b of 10g and 20g are doing with velocity 3 m/s then find velocity after collision

Answer 1

Answer:   Let the velocity of 2nd ball be v m/s

m  

A

​  

=0.2 kg;v  

A

​  

=0.3 m/s;m  

2

​  

=0.4 kg;v  

2

​  

=v

Applying Momentum Conservation:

Initial Momentum=Final Momentum

⇒m  

A

​  

v  

A

​  

+m  

B

​  

v  

B

​  

=0(final momentum)

⇒0.2×0.3+0.4×v=0

⇒−0.06/0.4=v

⇒v=−0.15 m/s