Question

A 50g bullet leaves a rifel with vel of 400m/s and the rifel recoil with vel of 0.5m/s calc the mass of rifel

Answer 1

Answer:

40kg

Explanation:

m1v1 is equal to m2v2 law of conservation of momentum mass of bullet×velocity of bullet is equal to mass of gun×recoil velocity of gun change the units as well according to your options

Answer 2

Answer:40 kg

Explanation:

m1u1+m2u2= m1v1+m2v2

Since u= 0

M2= 50 × 400×0.5 = 40000g=40kg