NEET Exam  >  NEET Questions  >  A person holding a rifle (mass of person and ... Start Learning for Free
A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]
  • a)
    –1.6 ms–1; 8 N
  • b)
    –0.08 ms–1; 16 N
  • c)
    – 0.8 ms–1; 8 N
  • d)
    –1.6 ms–1; 16 N
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A person holding a rifle (mass of person and rifle together is 100 kg)...
Ans.

We have to use the Law of momentum conservation:
P ( initial ) = P ( final )
0 = n � m � u + ( M - n � m ) � v
where: n = 10, m = 10 g = 0.01 kg, u = 800 m/s, M = 100 kg.
0 = 10 � 0.01 kg � 800 m/s + ( 100 kg - 10 � 0.01 kg ) � v
v = - 80 kgm/s / 99.9 kgm/s
v = 0.8 m/s
Then : F = Δ P / Δ t = ( 10 � 0.01 kg � 800 m/s ) : 5 s = 16 N
Answer: The average force exerted on the person is 16 N.
This question is part of UPSC exam. View all NEET courses
Explore Courses for NEET exam

Similar NEET Doubts

Top Courses for NEET

A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer?
Question Description
A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer?.
Solutions for A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth surface and fires 10 shots horizontally, in 5 s.Each bullet has a mass of 10 g with a muzzle velocity of 800 ms–1. The final velocity acquired by the person and the average force exerted on the person are [NEET Kar. 2013]a)–1.6 ms–1; 8 Nb)–0.08 ms–1; 16 Nc)– 0.8 ms–1; 8 Nd)–1.6 ms–1; 16 NCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev