Question

Answer 19(c)
Brainliest question

Answer 1

M = 4 kg    ,  m  = 50 gms

v  = 35 m/sec

Initial momentum of rifle and bullet together = 0.   So  as per the

conservation of linear momentum,

  =>    0 = M * (-V) +  m  v  

=>     0   = 4 * (-V) + 50/1000  * 35

 

 V =  0.4375  m/sec    (recoil velocity)

Answer 2

U can solve through here