A bullet when fired at a target with velocity of penetrates 1 m into it. If the bullet is fired at a similar target with a thickness 0.5m, then it will emerge from it with a velocity of |
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a) |
b) |
c) |
d) |

A bullet when fired at a target with velocity of penetrates 1 m into it. If the bullet is fired at a similar target with a thickness 0.5m, then it will emerge from it with a velocity of |
|||||||

a) |
b) |
c) |
d) |

1 Answer

127 votes

Let be the velocity with which the bullet will emerge Now, change in kinetic energy = work done For first case, For second case, Dividing eq. (ii) by Eq. (i), we get |

127 votes

127