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 ............ $\mathrm{ft/sec}$
$0.1$
$0.2$
$0.4$
$0.8$
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 ............ $\mathrm{ft/sec}$
According to conservation of momentum
Momentum of tank = Momentum of shell
$125000 × v_{tank} = 25 × 1000 ==> v_{tank}= 0.2 ft/sec.$