Work Energy And Power Question 38

Question: From a stationary tank of mass 125000 pound a small shell of mass 25 pound is fired with a muzzle velocity of 1000 ft/sec. The tank recoils with a velocity of [NCERT 1973]

Options:

A) 0.1 ft/sec

B) 0.2 ft/sec

C) 0.4 ft/sec

D) 0.8 ft/sec

Show Answer

Answer:

Correct Answer: B

Solution:

According to conservation of momentum Momentum of tank = Momentum of shell

125000 × vtank = 25 × 1000

therefore vtank = 0.2 ft/sec.



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