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.
