Question

from a rifle of mass 5kgfrom a rifle of mass 5kg, a bullet of mass 50g is fired with an initial velocity of 30m/s.calculate the initial velocity of the rifle​

Answer 1

Answer:

Explanation:

Here, m1=5kg,m2=50g=50×10−3kg

u2=108km/h=108×100060×60s=30m/s,u1=?

From m1u1+m2u2=0

u1=−m2u2m1

u1=−50×10−3×305=−0.3m/s

Negative sign indicates that the gun recoils (i.e., it moves in opposite direction).