Question

plz find recoil velocity in question number 4
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Answer 1

Mass of the rifle M= 4kg

Mass of the bullet m= 50g=0.05kg

Velocity of the bullet V= 35m/s

Recoil velocity=?

Total momentum after firing=

Total momentum before firing

MV=mu=0

4V(0.05×35)=0

4V=-0.05×35

V=-0.05×35/4=-0.4375m/s