Question

3. From a rifle of mass 4 kg, a bullet
of mass 50 g is fired with an
initial velocity of 35 m s-
Calculate the initial recoil velocity
of the rifle.​

Answer 1

Answer:

M = 4kg m=50

gms

v= 35m/ sec

initial momentum of rifle and bullet together =0 so as per the conversation of linear momentum

0= M*(-v)+ m v

= 0= 4* (-v) + 50/1000*35

v= 0.4357 m/sec recoil velocity

Answer 2

Answer:

m of gun=4kg,m of bullet=5×10^-3

since there no change in momentum

4×v=5×10^-3×35

v=0.44m/s