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A 100grams bullet is fired from a 10kg gun with a speed of 1000m/s .what is the speed of recoil of the gun.

Answer» <html><body><p>Mass of the bullet = 100 g = 0.1 kg Mass of the <a href="https://interviewquestions.tuteehub.com/tag/gun-1014044" style="font-weight:bold;" target="_blank" title="Click to know more about GUN">GUN</a> = 10 kg Speed of the bullet = 1000 m/s To find : Recoil speed of the gun Solution : As no <a href="https://interviewquestions.tuteehub.com/tag/external-981194" style="font-weight:bold;" target="_blank" title="Click to know more about EXTERNAL">EXTERNAL</a> force is acting on the system ( bullet + gun )the momentum of the system remains conserved . As per law of conservation of momentum ,Initial momentum of the system = Final momentum of the system As , initially the system ( bullet + gun) was at rest . As a <a href="https://interviewquestions.tuteehub.com/tag/result-1187343" style="font-weight:bold;" target="_blank" title="Click to know more about RESULT">RESULT</a> , the initial momentum of the system will be zero . Hence ,Final momentum of the system = 0 here ,mg = mass of the gun vg = recoil speed of the gun <a href="https://interviewquestions.tuteehub.com/tag/mb-546939" style="font-weight:bold;" target="_blank" title="Click to know more about MB">MB</a> = mass of the bullet vb = speed of the bullet Now let's <a href="https://interviewquestions.tuteehub.com/tag/substitute-1231629" style="font-weight:bold;" target="_blank" title="Click to know more about SUBSTITUTE">SUBSTITUTE</a> the given values in the above equation ,The recoil speed of the gun is - 10 m/s.</p></body></html>


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