Work Energy And Power Question 201

Question: From an automatic gun a man fires 360 bullet per minute with a speed of 360 km/hour. If each weighs 20 g, the power of the gun is [Pb. PET 2003]

Options:

A) 600W

B) 300W

C) 150W

D) 75W

Show Answer

Answer:

Correct Answer: A

Solution:

Power of gun =Total K.E. of fired bullettime

=n×12mv2t=36060×12×2×102×(100)2=600W



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