Question

2.3. From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of 35 m s -1. Calculate the recoil velocity of the rifle.
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Answer 1

Answer:

m1=4kg

m2=50g=0.5kg

u1=35m/s

m1u1+m2u2=m1v1+m2v2

• 4×0+50/100×0=4v+5/1000×35
• 4v= -35/20
• v=-35/80
• v=0.437m/s

Answer 2

Answer:

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