$10\ m$ is the total mass of a cannon that includs all shell. Initial cannon is moving with velocity $10\ m$ is along a horizontal frictionless path. If cannon fires $'n$' shells of mass $m$ in the direction of motion of the cannon one by one with velocity $u$ with respect to ground. (neglect any friction force)
$10\ m$ is the total mass of a cannon that includs all shell. Initial cannon is moving with velocity $10\ m$ is along a horizontal frictionless path. If cannon fires $'n$' shells of mass $m$ in the direction of motion of the cannon one by one with velocity $u$ with respect to ground. (neglect any friction force)
- A
If $u > 10$ after some shots $(n > 1)$ velocity of cannon may become $u$.
- B
If $u < 10$ after some shots $(n > 1)$ velocity of cannon may become $u$.
- C
If $u = 10$ after some shots $(n > 1)$ velocity of cannon may become $u$.
- D
For any speed $v$ and any number of shots cannon speed can not be $u$.
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- [AIEEE 2005]