Question

from a rifle of mass 5kg a bullet of mass 50 g is fired with an initial velocity of 108km/h. calculate the initial recoil velocity of the rifle.​

Answer 1

Answer:

Answer:

-0.5m/s

Step-by-step explanation:

M=5kg

m=0.05kg

total momenta before fire =0

total momenta after fire=0.05*50+5v=2.5+5v

total momenta before fire = total momenta after fire

0=2.5+5v

-2.5=5v

v=-0.5m/s

Explanation:

Answer 2

Explanation:

MASS OF REFILE=5KG

VELOCITY =V

MASS OF BULLET =50/1000=1/20KG

V=108km/h

5KG×V=1/20×108

V=1/20×108×1/5

V=0.18m/sec