Answer on Mechanics | Relativity Question for Sakura
a) What is the initial momentum of the rifle-bullet system?
b)What is the recoil velocity of the rifle?
b) the total momentum of the system remains zero;
M(bullet) x V(bullet) + M(rifle) x V(rifle) = 0;
V(rifle) = M(bullet) x V(bullet) / M(rifle);
V(rifle) = 0.05 x 300 / 5 = 3 m/s
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