From a rifle of mass 5kg, a bullet of mass 50g
is fired with an initial velocity of 30m/s. What is the
initial velocity of recoil of the rifle ?
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Answers
Given : From a rifle of mass 5kg, a bullet of mass 50g is fired with an initial velocity of 30m/s.
To Find : What is the initial velocity of recoil of the rifle ?
Solution:
Apply conservation of momentum
initial Momentum = (5kg + 50g) * 0 = 0 kgm/s
, a bullet of mass 50g is fired with an initial velocity of 30m/s.
=> mv = (50/1000) 30 = 1.5 kgm/s
a rifle of mass 5kg initial velocity of recoil of the rifle = v
=> 5v
0 = 1.5 + 5v
=> 5v = -1.5
=> v = -0.3 m/s
- ve sign indicates recoil of the rifle
the initial velocity of recoil of the rifle = 0.3 m/s
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Answer:
the answer is 0.3 m/s
Step-by-step explanation:
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