Question

if u ans ur dream comes true A 2.5 kg body moving with 15m/s collide with 5kg body at rest.They stick together.The common velocity is​

Answer 1

Answer:

Explanation:

Given :   m  

A

​  

=m  

B

​  

=2.5 kg          u  

A

​  

=5 m/s         u  

B

​  

=0 m/s         v  

A

​  

=0

Conservation of momentum :       m  

A

​  

u  

A

​  

+m  

B

​  

u  

B

​  

=m  

A

​  

v  

A

​  

+m  

B

​  

v  

B

​  

 

∴   2.5(5)+0=0+2.5v  

B

​  

                         ⟹v  

B

​  

=5 m/s